@lovinthehd
Should get my bike back from the shop tomorrow.
I went back with the WTB Ranger 3.0" (tough version) on the rear, partly at the rec of the shop guy and partly due to cost (of course the LBS prices are a bit more than online parts pricing). However, I did purchase a Maxxis Ikon 2.8" online as a spare, so I will try that out eventually (it also came with a free Maxxis draw-string backpack, score!).
I'm moving from a 160mm rotor to 180mm on the rear, and new brake pads.
And, completely rebuilding my rear wheel with stronger spokes. I broke a couple of spokes, and this is the 2nd time I've done that.
The big difference this time is that the owner handed me off to a guy that has more experience with the larger tires, but he is also a much larger guy like I am. So, he understands the unique challenges and stresses that a big heavy rider puts on an XXL bike. He took a good look at my broken spokes and made that rebuild suggestion, even before I told him this is my 2nd trip with broken spokes. But, that is also ~800 miles on this bike.