[NorCal 4x4]

Since it sounds like you don't do too much off-road, the Bridgestone P285 sounds like your best bet. It's about 14 or 15 pounds lighter the the BFG AT KO in a LT285, so you won't lose 1 mpg, (anyhow, that's how much I lost when I switched). BFG KOs are awesome, but the BS P285 sounds like a better move. Btw the Revos are now also available in a LT285, but they are so new there's not any decent long term feedback.

edit: One thing I should have mentioned about the BFG AT KO, is that mine got very slick in the rain this past year at 33,000 miles, (with about 10K miles of tread left). I don't recall seeing others mention it though. Tried sandbags, but even at 320 pounds of sand in the bed it was still bad, I replaced them with Toyo M/Ts.