I bought one of those canopies from Dicks a couple of years ago. They are pretty flimsy. Mine didn't last one season. Let's just say, I got dicked by Dick's
Those EZ-Ups at Sams Club are the genuine name-brand item, not cheap knock-offs, like the ones at Dick's. The box says it has an aluminum frame. At $200 including the sides it's a damn good deal.
The PahaQue screen house doesn't seem that hard to set up. In fact, it looks easier than the hexagonal screen house we're replacing. If you check out the video link at http://www.pahaque.com/products-screenroom.shtml
you can see the set-up prodedure. It basically sets up similar to a couple of dome tents that I own. The video didn't work for me in Firefox. I had to use IE. For some reason Firefox doesn't play nice with some plug-ins.