I love my EZ up.
I got it from the Hutshop.com, last year at a good price ($240 or so), included walls, and the strongest fabric for the top that they had (at least as of last summer), carrying case and awning and banner pocket.
I think it was this one:
http://www.hutshop.com/ezupcanopies.htmlI've seen people do it one person, but I think its tricky. I always have help. It goes up VERY easy with two people. My husband and I always help our neighbors if they are alone, so I imagine there would always be help if I'm every alone.
Its very sturdy. Decent quality. Its rather heavy to lug around! (but with the weight, comes the sturdy) And besides, that's what husbands are for.
The zippered walls are great. Though they can be a little bit tricky to zip at the corners. Its a fairly tight fit, so if the legs are slightly out of square (like they tend to be on an un-even ground) its hard to meet up the edges. We've always managed to get them zippered -- though sometimes with some grumbling.. I like that they are fairly translucent, so they let in plenty of light.
The canopy is nice and high, so lots of head room and display space. Mine is adjustable, so I can have it lower if I want (I always have it has tall as possible).
I don't tend to use the "awning and banner pocket" that came with it.