Vortex,
I have been looking at going with 20" s as well however, I quickly found a couple of things.
1) I don't like the "street" look as much as I thought I would.
2) The difference in tire price between 20"s and 18"s was unbelievable!!!
3) I don't have a lift, only a leveler and I don't want a lift at this point as my truck fits in the garage.
In the end, I think I will be sticking with my H2 wheels although I might go with a 325 next time out instead of a 315.
Huskerman