It is tire size questions this week...
Depending on the company, I like 235/75 tires. You have to trim your bumper and beat in the fender lip for them not to rub but they will usually fit under a stock setup. And you will loose a little bit of power, but they look cool. A small shackle lift (1" max longer shackles) or a set of 1.5" springs could be used it they rub a bit to much.
Otherwise go with the 215/70 tire. Little bit over stock but not enough to cause any problems.
That is my opinion anyway. I'm a fan of 2" lift springs, 30" tires and a 4.8:1 transfer case myself.