Denali’s are nice. I had a 15 after my Suburban. If you didn’t have issues I would wait till the 25 updates. The difference is real bit not worth it , tp me, after putting thousands into your Tahoe. Funny, I paid a real premium for my Tahoe, 85K, but I was anxious and paid a 5 K premium. Really love it. Denali is definitely more fancy and makes a statement compared to a Tahoe. I like the Escalade as well. Good luck.
BTW, I got ride of my 15 Denali because it had electrical demons like your Tahoe.