Clint, I have a Q100 and it's fine for a quick burger, steak or chop and I'm sure the Q3200 will do a little more then mine.
If I had to pick between the two I would take the older Genesis silver because it gives you more cooking area, but with that said I would really hold out for a three burner even if it was older one, they are just so much more versatile for doing direct and indirect cooking and the parts are easy to find and if it's rust free it will last forever.
Cost wise it would be much less then the Q and I think you would be much happier in the long run.