What do you want to cook on it? Nothing close to that price range is going to be as versatile as the Weber kettle. I have never used a cheap propane grill that I didn't hate, but I haven't tried the Broil King mentioned above so maybe they exist. My Mom has the Weber Spirit which is the bottom of the line Weber but I have cooked on it a couple times and it seems pretty solid. Certainly a big upgrade from the Walmart POS gas grill that she had before. Hard to carry a gas grill around in an SUV though.
For tailgating the Green Mountain Davy Crockett would be a fun option. It's not going to sear steaks as well as some other things, but it will get them cooked and it should be pretty nice for smoking and will certainly grill burgers and hot dogs. It can run on your cigarette lighter, but I'd make sure you have jumper cables if you're going to smoke something that way hehe. $375
Davy Crockett - Green Mountain Grills