I've owned both. I had a Sport Platinum & now a Denali. The Caddy It is a 30K difference between the two & it's not justified. I got the Caddy when they first dropped & had problems with it. Was without the vehicle for 23 days after owning it 4. Then once I got it back, had a leak through a rear light onto the second row of seats. Caddy was 116 & Denali was 85K. After the sunroof leak, I then had a problem with the infotainment system, they kept the truck for 2 days & overnight a part, meanwhile the Onstar module went out. Ive had fewer issues with my Denali, mostly recall stuff like the headrest check & that ECM bulletin. I had a wrapper in the door that caused a squeak. Would I have kept the Caddy if the problems weren't there, yes I would. The thing is it isn't a 30K difference in the top of both models. I got the Denali loaded & the Caddy too.