Sell the Lexus! Just kidding. We‘ve had two Suburbans and loved each one. Still have the one, it sits idle most of the time. Each has basically been trouble free except for one thing. The first one we had started loosing coolant, mechanic couldn’t find it. The longer the trip the less coolant it lost. It seemed to loose more driving around town on short trips. It was 2005 close 100K on it. I did some research and discovered there were some blocks in that year with hairline cracks which caused coolant loss. We finally traded it in on a used 2013 Suburban. It now has close to 100K and runs like a champ. I keep thinking about selling it as the only time we “really” need it is a family vacation, but that is even starting to become less of a need as kids grow, move out, work etc.Tough call. We have 3 vehicles right now, and the 2 my wife has are not comfortable for me to drive. Matter of fact, the Benz 350SLK, which she got when her Mom passed, I don't even fit in unless it's warm enough to put the top down, much less try to drive it. Her Lexus RX350 has all the bells and whistles, but in 4 years I've never been able to get the seat in the right position and the side of my right knee hits the console enough to be a major annoyance. So, 3 cars for 2 of us, and I only like mine. The Jeep gets our 2 big dogs and seems to do the majority of short trips- but let's be honest, I'm not doing a cross country trip in it.
I need something that is comfortable enough to drive for 8 hours, has some towing capacity and can haul the dogs and/or some luggage. I've been toying with the idea of starting my own gig, which includes a 12-14' enclosed trailer, which the JK won't tow, so there's that as well. So, yeah, it's going to be a Sequoia, Tahoe, Suburban; something along those lines.
I'd love to keep the JKU, just because I've made it mine, but 4 vehicles between the 2 of us... unless I could get her to sell the Lexus.... hmmm.
Good luck in your decision making. You are certainly correct the JK couldn’t tow and do some of things you are considering.