I'll happily post a comparison once I get the Yukon. Our Wagoneer has the I6TT and it's definitely got some power. It has the tow package too, so 10k lbs towing capacity and 4WD. Only towed with it once, but it easily pulled a 6500 lb camper out of some somewhat sandy soil and towing was a breeze on the highway. Thought the Wagoneer would be our road trip vehicle when we ordered it with 2 kids, but once we found out about #3, the regular cargo area just won't cut it. Hence my need/want for an XL. I like the Wagoneer a lot although it has some quirks, and I really didn't want to put all of my eggs in one Jeep basket with two Wagoneers in the house lol. I'm excited to see how the Yukon compares once I can drive them both regularly. I'm sure it'll ride better with the longer wheelbase.I hear you on the RSE. Mine is a lifesaver (the kids' lives, that is lol) on road trips! The Wagoneer will definitely be more peppy, both the I6TT and 392 Hemi are a lot stronger than the 5.3 L83. The AT4 will be more off-road an tow capable, especially with that package, so it'll be interesting to see a comparison from a forum member first-hand.