Should I just stick with using Dualsense on my deck or get something like the 8bitdo ultimate/king kong controller?
It’s your preference, however in the event the Dualsense ages too old and needs replacement, assuming you have a PS5 you’ll need to replace it to continue playing on PS5
My main platform is PC, I have various consoles and I keep a unique controller for each because on PC I play enough to burn through controllers, If I use my one Dualsense that would risk my ability to play on my PS5 until I replace it and limit my next controller option to just the Dualsense.