Currently running SLI 780's (not Ti)...for me I would love to go to a single GPU as the infrequent but annoying multi-card issues will always be there, (currently Dying Light), but overall a pass from me on the Titan X, single 780 can limp by still when it has to...It will be hard to pass whatever the next next gen can do...the money is not significant for me but I am not immune to buyers remorse.
Does anybody want to try to convince me otherwise?
I don't think it's a matter of trying to convince you, but a matter of how big your pocketbook is and how much you really want to spend and what kind of return you will get when you go to sell the new Titan(s) X you purchase.
I was able to get $750 each for my Titans when I sold them and purchased my current setup.