It's not a little better than Brinkman grills, its alot better. Get the Weber Spirit E-310. It costs more than you have set for your budget, but you won't need another gasser for a very long time.
The Weber gas grills in general have 2 things far superior to the others: 1) even heat distribution and 2) quality construction. In addition, the Weber grill gets hot real quick, 500 degrees in a couple of minutes.
[FONT=Century Gothic][SIZE=3][COLOR=black]Arthur Aguirre
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22.5" Weber Smoky Mountain Smoker
22.5" Weber OTG
Weber Spirit E-310
Brinkman offset smoker
Brinkman ECB smoker (modified)
UDS (under construction)