Yukon or Tahoes basically are the same vehicle, one is GMC, on is a Chevy, although I'm sure you knew that. The Jeep, well, it's a Magnum engine, which IMO are garbage. Terrible gas milage, chronic compression issues, especially since most GC's come with the 5.9. The interiors are decent, not very roomy. I personally don't care for them because they are small.
I drove a couple GC"s with my wife before buying our Touerag. Nice cars, but too small for my tastes. As is the VW, but then again, I didn't get any say.
It's still much, much nicer then any GC we drove.
The Tahoe's and Yukon IMO drive better, but the interior's are ugly, but much more roomy. Don't get leather in a GM vehicle. I've owned 2, a 98 and a 2002 Silverado, and every year for 5 years, I've had a repair bill for cracked leather sets. I condition them about every 3 months, and keep them well cleaned. The seams are stiched as cheap as possible, and they rip at the seams. The items in the car, well, they seem cheap, and are cheap. I've had my heated seat button on the driver side get stuck, the ride control button break, the stereo keeps resetting the time just for fun. Also over time, the truck has devolped HORRIBLE rattles in the passenger side door, and there is a funny ass grinding noise in my seat everytime I get in. This is all in a truck with 22,000 miles on it.
I forgot to mention the tailgate fell off too, and the pulsating in the brakes since about 16,000 miles. I won't be buying another GM product. But, on a positve note, the ride is solid, handles well, plenty of power (I have the 4:10 gears for towing), quiet, and as comfortable as anything else I've ridden in.
EDIT: Spelling, Touareg, sorry. =)