I had the KOs on my old XJ. They were decent tires but my current Nitto EXO Grapplers are superior. They also have the snow tire rating and their side walls are about twice as thick and have good traction in the snow and slush. I put them on in January of this year while I lived in Rhode Island (for the entire winter) and made several trips up to VT to visit family and Offroad in deep snow. They balance easily, are great in the rain, have been wearing very well and look great.
Take a look at them and see them for yourself.