I'd say if you can find a GTX 1080 Ti for under $600, get it. After owning both the RTX 2080 Ti and 2080 (upgraded to the Ti), the GTX 1080T Ti is still a great card. You're also paying double the price for just a 33% performance difference. Which is exactly why I kept my GTX 1080 Ti and put it in my Streaming PC. It handles 4K (loudly) and the price per performance can't be beaten.
Nvidia dropped the ball on RTX. Not everyone wants Ray Tracing.
Nvidia dropped the ball on RTX. Not everyone wants Ray Tracing.