His is an xlt with 20 in wheels. You can tell by wheels and taillight design.
As far as replacing it, it depends on what you need. Tbh, If looking for reliability, your best bet would be nissan. Newer Toyota have just as many issues as Ford, and gm, and all three have less than jeep. I dnt hear about people having issues with nissan. Our armada needed the airbags replaced, but was fine after that. It seems the main problem isn't the reliability, but the service not wanting to work on them. There's good amount of people who have expys with high mileage and no problems.
If the ride is a problem, maybe swap for 18s and a thicker tire. Your not getting a better ride with the same level of room unless you go new jeep or gm, and you'd have to get the fully optioned models with the air suspension as well. The nissan or Toyota ride worse than what you have holistically. They also do not have the room as the gms or jeep.
If you can swing it, maybe a telluride, palisade, or grand highlander may be good as they have good amount room for the size.