The BFG AT KO is an excellant AT tire. They wear like iron also. I've heard of people getting 60,000 miles out of them. I had the 265/75/16 on my X before I went to 33" SuperSwamper TSL Radials and I loved them. I only took them off because I wanted a bigger tire. In fact, I'm planning on get new wheels to mount them on and put them back on my X.

As far as sliders go. If you plan on doing any off-roading, you'll want them. Which ones to get are a matter of personnal preference. The Calmini's dont stick out as far as the schrocks do, so they can't be used as a "step". I have EOE sliders and love them.