Randy, I have the Yoko geolander AT=II. I have used both those and BFG AT KO,s. The BFG,s on another truck. The yokos are quieter on the road and are stickier on snow and ice. They corner better on pavement and seem to be better in rain. Thats for the on road portion. Offroad I used the yokos at Cruise Moab and had no traction problems at all. That said the BFG,s are better in deep packed snow, 1 foot +. They chew through better. In mud they both clog up. The yokos are also less expensive. Tire wear seems to be about the same so far.
Like seminole said you should be able to run 33, stock w/o rubbing, but I would do the suspension as well if you can afford both. I would go with OME, (old man emu). Go to sleeoffroad.com . I went with australia offroad and their springs worked great until I added a bullbar, winch and sliders. Now it is apparent they are too soft. Am now trying to figure what OME spring to get. Also after looking at the articles on sleeoffroad, and you need some advise for your needs, just call them.
Regards
Sean.