I just got a Micro and used it yesterday for the first time. It was really nice - easy to push and the kids were comfy. My son is 43" and 43 lbs and I have a baby girl (approx 17 lbs). I didn't get the car seat adaptor, kid tray, or any other accessories.
The only thing I don't love about it is that the basket is hard to access. It's large and you can fit a lot down there, but it's hard to reach, especially when the kids are in the stroller. I ended up having to take everything out of my diaper bag and just putting it loose in the bottom. Not ideal, but it worked. There are also big pockets on the backs of the two seats.
I don't think there is a huge difference between the two, but I'm not sure. I got my Micro brand new on Albeebaby.com for $229, no tax or shipping. I just bought it about two weeks ago.