I dunno man. If Sapphire keeps you happy then just let it be. Otherwise, if UD is where you want to be, try again. When I first installed UD (and I came from UD 7) it fc's everything. And I mean everything. I persisted to try because (1) I wanted it and (2) because I wans't about to let issues deter me. I had to make things right (sorry, too much Holmes on Homes). I did get UD 8 up and running without issues.
Ever since I installed the bluetooth patch, my phone has become laggy as hell but, again, I am making changes to try to correct that. I did some tooling todat=y and so far, so good.
Just remember, phones these days aren't what they used to be. I consider my phone to be like a computer. Sometimes it needs a restart, sometimes it needs updating, etc... Just like windows... if it crashes what do you do? Use linux, I doubt it.. you problem solve and make Windows work.