Here's my 2 cents. I owned a nice stainless steel Brinkmann (Pro Series 2500) previous to my current Weber Genesis. I was always one of those guys that preached about how you were mostly paying for the name with Weber. The Brinkmann was a great grill. Cooked very evenly and I took great care of it, keeping it clean and covered almost always. But the guts of it rusted out completely over about a 4-year period just from cooking in it so much (liquids from various meats, etc.). Completely thrashed out. So a little over two years ago I bit the bullet and sprung for a Genesis. I don't expect I'll ever HAVE to buy another gas grill - I'm sure I will at some point just for fun. :) I was amazed at how heavy and solid the parts were for the Weber. It took me a couple hours to put it together. It's a much more sturdy than the Brinkmann was (and I thought the Brinkmann was a nice grill).
Also, the customer service from Weber was outstanding. When my grill showed up, there was a little plastic piece broken on the ignitor button. I called Weber and they were very apologetic and overnighted me a replacement button.
Go for the Weber. You won't regret it.