I am putting on 255/75/17 on mine shortly (they are supposed to be the largest diameter with no other mods), and I definitely noticed that the "tall skinnies" are a bit cheaper than the rough equivalent 265/70/17. Actually, I just noticed that you have an SR5, so I believe you have 16" wheels, no?
Goodyear Silent Armor appear to be popular, as do Revos or the always recommended BFG AT tires. If you search, ye shall find.