We spent most of the summer trying to decide on the best grill and I finally caved in and spent the money on the Weber Q 220 and the stand. I saw several grills that would have worked but none that were incredibly sturdy for being on the grass lots in G7. I ended up paying around $300 all together for the Q but man that puppy can cook like a full size grill. We've used it for both tailgates this year and everybody has loved cooking on it at the CF tailgate. Warning - it can get much hotter than typical portable grills so watch the food if you have it on high.
On a side note - We bought the biggest version of the Q (320 or something like that) that comes on a fixed stand for home use this past spring and have loved using it several times a week. We had a somewhat cheap grill last year, but it just couldn't cook a steak evenly, no matter what you tried. We finally got the "Daddy Q" as I like to call it this spring and it's a piece of art.
Take it from somebody that has gone through 3 grills in 3 years, buy a good one to begin with and save the hassle of selling the old and buying a new one every year.