Hi Angie!
I don't usually go to one store to get my organic produce- although if I had to pick one, it would be Vitamin Cottage. WholeFoods is ridiculously expensive and they sell a mix of conventional and organic, lately it's been more conventional than organic, and ethically, I would rather support a company that is committed to offering the best foods to their customers.
It is the cheapest, and usually best quality to find a source where you can get your meat in bulk, like buying half a cow or 10 or so chickens. Otherwise, (and unfortunately-see above feelings) Wholefoods has the best price and quality on Organic ground beef. We have tried several from Vitamin Cottage, but the quality is never as good as the beef from WF's.
King Soopers and Safeway have decent offerings of organic produce, too.
I must say, I am pretty spoiled right now with my garden in full swing- I don't have to buy much produce right now. I do go to the Farmers Market every Saturday, here in Longmont, to get mostly fruit- peaches, apples, canteloupe, watermelon.
As for Door to Door, my experience was just okay with them. It is a great service, but I felt, for the money, that I would rather get produce that I picked. I would always end up with some stuff that wasn't the best quality, and at a premium price, I just thought we could be a little wiser with our money. They were good in offering credits to our account for the produce that wasn't so great, but I got tired of calling every week to report what shouldn't have made it into the box in the first place. (For instance, the entire apple order had mold on the bottoms and incredibly bruised and browned oranges.) It is worth the try though, especially if it is not feasible for you to go to several stores to get the produce that you need. Perhaps it is just that I had really high expectations...
Boy, didn't mean to write so much! We are committed to eating organic food, and though it may take more effort (and self control when the conventional strawberries are 1/5 the cost!), I believe that it is so worth it! If you have other questions, please don't hesitae to let me know!
Something else- you could organize or be part of a co-op and get organic produce direct from the distributor, now there is where you can really get incredible prices!