I notice the Defenders aren't XL rated either. Truthfully I don't know how much of a difference that will make.
I'm really kind of freaked out by how not very good the Terraincontacts are in snow, but a bit apprehensive about loses in things like handling comfort, cornering ability, MPG's, etc. from tires like the Destination AT2's, the AT3 4S's, and the Geolanders (things the Defenders and Terraincontacts are better at).
With the Destination's being both XL and 3-peak rated, I'd say that moves them up on my list and probably ties them with the AT3 4S's (which are also both XL and 3-peak) for first place right now (Defenders second, Geo's tied with Terraincontacts for third).