no experience with Grabbers...there are some folks who swear by them, and having seen them in person many times, I have to say the Grabbers look they would add up.
However, I drove through 2 sets of Goodyear Wrangler Silent Armors when my job was driving a ski industry van around the Western US (the whole West, for race service, not just Colorado). The tires never let me down and had awesome traction.
So, when it's time to replace the BFG ATs that came on my current 80, it will be either Silent Armors or Duratracs. I'm really not considering any other tires for the 80 until it becomes my secondary vehicle (in like 4 years). More than likely the Dura Tracs will end up on the 80.
I agree with Jule that the Silent Armors are far superior every day driving tire to the BFG ATs. And the stock Michelin LTX M/S tires are downright dangerous in slush as they like to ride on top of the surface instead of in it ie planeing. Great in frozen snow or rain (as long as the snow or rain is not too deep).
Beware of which Wrangler tire you are considering. The Silent Armor, MTR and Duratrac are by far the superior variations.