Sell what? I'd call, they may be able to get them. If not, go with Discount tire or another company that does.
As I've said before, I like the BFG KOs. They work good for me in just about everything I've thrown at them. I've ran them on a bunch of different trucks over the years and they seem to work good, plus they are still relatively quiet. The KO2s just came out with limited sizes so I haven't tried them yet. I've read up on them and I can only imagine they would better than the KOs. I probably will buy some in spring or summer.
That being said, I do run different tires from time to time just to try something else. My last set of different tires were Toyo AT2s with the extreme tread. Thick sidewalls, meaty lugs, seemed to do great on snow and ice, good in mud, balanced very easily but, the main thing I did not expect and didn't like was they were MT loud over 60 mph.
If you never offroad the BFG KO2s may be overkill for your needs. You may want to look into the Michelin LTX M/S2 or LTX A/T2. The MS2 does good in the snow and rain, last forever, and work perfect for on road driving.