Prime Then Paint, or Paint and Primer in One?

I've done both and prefer primer and paint separate. I tint the primer the same color as the the paint and it covers better and lasts longer than the two-in-one paints.

Depends on the existing color and quality of the surface you're painting.
For interior walls with similar tone and NO water damage, etc., the combo is fine. For extreme color changes and surfaces with staining, etc. best to use separate primer & paint.
So....depends.
We like Behr profucts.

I would say it depends on the color you are covering. We just used the paint and primer in one for our nursey and it was a light green color and the walls under where a bright blue (because it was a toy room) and it covered great and we only needed one coat. However, if you have a dark color that you are coloring up - you may want to prime first.

We prime and paint in one. UNLESS we're trying to paint over a VERY dark color.
Good luck!

primer is used to both get the paint to stick properly and to provide a blank canvass so that the color appears most true. Even if you are painting on say a lavender wall that is light in color. If you paint over it in maybe even a light green the color would be affected. It might look fine and be an acceptable color but it will vary slightly from what you intended it to be. Also if you are painting over certain finishes the paint will not adhere well and you may end up doing more coats than you planned. If you are doing a dark wall, without question you need a separate primer.

Aura is supposed to be awesome - Benjamin Moore paint and primer in one. It's expensive, though.

My painter was SUPPOSED to use it on my walls - so he didn't prime. But he didn't use it - I was so mad. Make sure you don't get screwed like I did.

Primer and paint for anything but white walls. I tryed the Behr 2 in one and did not care for it. I am a color purist and am sensitive to tones left after you paint over a certain color. The High Hiding Primer from Lowes does a great job on even the most intense colors. Don't look for WHITE after painting it with primer, you just want a coat on it. Your paint will then cover

You want the 2 mm plastic for a drop cloth, any thicker and it's hard to handle, any thinner and it's too flimsy.

If you buy your Propel at SAMs their blue box is the exact size you need for a paint tray, you just put a liner in it. If you take a break, just wrap it up in a couple plastic bags, put your angled brushes in a zip lock between paint sessions.
ETA:
I like the red edgers to do against the ceiling and baseboards but try to have 2 doing one wall or just not too far ahead because it can cause a line if it dries first before the roller goes over. You will need a brush for some areas and corners. You can buy a long pole about 4 ft to put on your roller to extend it. You can get one at walmart for cheap. Alot of things are cheaper at Walmart than Lowes.

Prep and clean up take longer than you think. Leave time for both.
Masking tape is cheaper than the blue tape but i have used both. Tape around windows and doors and the baseboards. Dust your walls from baseboard to ceiling before you start.
Take the covers off the switches and plug ins and put them and the screws in a Baggie so you don't lose them. Same with any curtain hardware. Fill in holes that you are not going be using again with quick dry spackle and sand it after it dries. Always start out with 2 wet rags for clean up as you go.
Put an old towel on the threshold of the door and wipe your shoes before you leave the room so you don't track paint through your house.
That's all I can think of now. Good Luck!

I am in a rush but I'll post more later!

depends on what color the walls are and what color youre covering it with. for example my fiancé paitned my neighbors twins bedroom. he had to paint over hot pink walls with a light lime green color. he absolutely had to use a primer and then paint, otherwise it would have never covered it. however, with our bedroom we went from a very light blue/greenish color to a medium/dark blue and we used a paint&primer in one

I only use Benjamin Moore. For me, a separate primer is dependent on the color. For deep colors, I use a separate primer.

For me, it depends. When we bought our house and needed to paint, we were simply going over the cheap contractors paint in beige, so I used a primer and paint combo. When I get the nerve to repaint my bathroom, I'll need to prime then paint. I painted the bathroom red and it will be difficult to cover.

And I usually use Behr paints. I really like them and the convenience of hitting up the hard ware store down the street versus the more difficult to get to paint stores.

I covered up a dark mustard yellow with off-white paint/primer in one, it looks great and you'd never know it was once yellow. Took 2 coats. A good brand to use is Behr from Home Depot.

The rest of the walls in my house I primed first and then painted. The upstairs I used Lowes brand paint and it's okay. Downstairs I used Olympia brand and I like it better. If I wanted to spend more or had it to do all over, I would have just gone with Benjamin Moore paints.

Paint and primer in one is of course best, because you save yourself a step.

The only downside to the paint and primer combo is that there are way fewer color options, and you might not find the color you want. In which case you will have to prime first. Behr paint and primer will cover quite nicely, no matter what color you are covering over. I don't know about other brands.

But go for the paint and primer if you can.

Painting is a pain in the neck so if you're going to do it, it's best to spend the money and time for good paint and supplies. There's nothing more frustrating than doing the work and then having to look at the little mess-ups every day.

I love Benjamin Moore paint. We were mostly painting over light walls, so we didn't use a primer. But there were some accent walls that tenants had painted a bright yellow and greyish green that we didn't have a problem covering. So using primer does depend on the existing color of the walls and the wall color that you're using over it, and also the quality of paint.

My best advice is to plan to do it well or pay someone to do it for you~

I like Benjamin Moore paints. To me, the expense is worth it - I'm going to be looking at those walls for years and don't want to re-do the work. I've found that the Ben Moore paints are easiest to apply where other brands are more likely to be drippy, uneven, not go on smoothly, etc. I'm also an old-school girl and prime first, then paint. I don't trust "all in one" products (like 2-in-1 shampoo and conditioner...has never done the job for me). So that's my two cents!