I love my AH 'not a plastic bag' (which i got from Whole Foods nyc when they came out).
It really is the perfect shape for groceries, and the handle is very comfortable. I love the saying on the bag, I really love it. I think it's a nice message, and (actually, no matter what bag i use to carry purchases) people see me putting stuff in my bag and things like: Good for you! (in a nice way, not patronizing). it's sweet.
Anyway, i love the flat bottom, and how the flat bottom can flip up so the entire bag can be flat and folded.
I am however, going to do something about the edges of the letters, like seal them with clear nail polish, because I see a lot of people whose bags are getting sorta frayed at the edges of each letter. I can't be having that, because I love my bag. : )
(i only use it for purchases, never as a handbag)