I may be the only owner on the board. Have owned ours since Jan of 2022. A few gremlins thus far but nothing crazy.
We have the Series III Wagoneer and I've done a ton of researching on these things as changes are being made to new MY and updates to service/software. Unfortunately, when these first came out, no dealership had any idea what was going on with these things. Part of the advantage to getting a Wagoneer is their "Wagoneer Client Service" - 5 free oil changes and rotations included on purchase - they'll pick up the car, service, wash it, and drop off. For free.
Luckily there's a good CDJR dealership near me for that.
Comparison between the GW and Wagoneer. GWs are PRICEY and you don't get that much more. Exact same size and mostly the same interior (to higher end wagoneer trims). You cannot delete the 2nd row console on the GW which was a nonstarter for us. The GW now has the twin turbo hurricane vs the 6.4L hemi. The 6.4L sounded awesome but got about 12MPG. Ours has the 5.7 hemi and we get about 16mpg (mostly city driving). We did get ~18 on a road trip to CO and back.
I'm not a fan of how the trims are categorized. You get less "choice" because only certain options come with certain trims. For example, the "all terrain" package can only come with certain levels. If you want the automated steps, you have to get the 22" rims. 360 camera package only comes with 1 trim addon. If you want the moon roof, you have to get the 22" rims, automatic steps, and upgraded sound system. So just keep that in mind as you go through a build.
Now, onto what I like and dislike...
Very easy and smooth driving vehicle. It's 4" longer than a tahoe but feels smaller and drives less like a truck (we test drove a new tahoe and my father has a new denali). The Hemi has plenty of get up.
Interior styling blows the similar GM products out of the water. Console, touch screen, knobs are much more streamlined. My dad's denali has about 50 knobs and buttons. The Wagoneer is very simple and looks great.
Third row sun roof is cool and the panoramic is nice.. tons of light when you've got all 3 open/unshaded. (third row doesn't open - just has a shade.
Due to the shape of the back (more square) and added length, there is significantly more space behind the third row than the tahoe or yukon. We've done long road trips with people int he third row and there's plenty of room for luggage in the back. Plus.. third row reclines!
As others have said, the flip/slide forward button on the captains chairs in the 2nd row are nice. Very easy in and out. Third row folds flat like others. We did a guys golf trip last year and I fit 8 sets of golf clubs, 2 coolers, and a few suitcases + 3 grown men in this thing.
We don't have the rear seat entertainment but it looks pretty slick - amazon fire tablets, basically, built in.
Overall, we really enjoy the car and it's everything we wanted. Plus, you can actually find them on lots (and get below MSRP now, I think). Good luck on even finding a tahoe or yukon. As others have said, with similarly optioned tahoes/yukons, these are about the same price. The "these are expensive!" notion was that early on, they only sold GWs and Wagoneer Series II and III with some more expensive options. If you go with a basic Series I, you can be in for under $60k I believe and it'll be more like a Yukon SLE/T or Chevy LT. A loaded Series III is basically a Denali, fully loaded (which are $90k+ now).
The bad: the Uconnect system was very buggy at first but has gotten better with OTA software and dealership updates. There's been a few software updates to lane assist that had to get worked out. We had to replace our lift gate assembly as it wasn't locking/unlocking appropriately. All covered by the dealership. Our headliner in the back had a few broken clips when we bought it (had a rattle). Replaced under warranty. Biggest thing that pissed me off when I bought it was the mirrors don't fold. $80k+ vehicle without folding mirrors. They have chosen small things to give the GW to make it feel nicer and this was one. Stupid in my opinion because you can get a 30k camry with folding mirrors.
Other than that, no issues (knock on wood). Happy to answer anything else.