I currently own a 2008 Suburban with ~85K miles, mostly hard city miles, plus annual summer road trips and entirely kept outside. Mechanic (family friend) says its very rusted underneath, AC won't stay cold, check engine dash light constantly on, tire pressure monitoring dash light on, weather stripping around doors breaking down, on occasion it shutters/ hesitates on a warm start, ride quality suffering, float / unstability becoming a concern...she's an old lady that has served us well. I have deferred putting a lot of money into the truck lately thinking I was moving on. I have kept up with routine maintenance. I have a reservation for the Tesla Cybertruck (CT) but that could be 2-3 yrs out. I know ... u love it or hate it. Something about me wants something different and I like the idea of an EV and functionality. In the meantime I do like the interior of the new GM models but I am not overwhelmed by the price. A new Escalade with the Supercruise is ~$110K...would rather buy something used and reliable to hold me over til the CT. I did just purchase a vacation/rental property that is about 2K miles away (roundtrip) so I imagine doing more driving in the coming years (why I desire self driving tech) but still probably will avg 10K - 12K miles/yr. Leaning towards the Yukon XL Denali just to mix it up ..and upgrading to the 6.2L engine. Seems like a good middle option. Not opposed to the Escalade or RST Suburban. I was thinking I would look for model yr 2018 since I think that is when GM introduced the 10 speed transmission? Any unusual concerns with the 2018? Of course I would consider a 2019 or 2020 too. What model year(s) should target and which year(s) should I avoid? What should I look for ...this would be my first time buying used . Should I also consider the Navigator L ...they seem a little more pricey though. Appreciate any and all feedback