You can never trust any audiophile's claim of having found "end game gear" until they are dead and buried. Until then, it's an open (and dubious) proposition :-)
I'm sort of "end gamed" for the moment, having been mostly priced out of upgrades. So I'm very happy with my Joseph Audio Perspective 2 speakers.
I also have my Thiel 2.7 speakers, which I've had for a long time now. I cant see every getting rid of them as they are my "fall back" speaker - one that just seems to do most things right, almost nothing wrong, and I dearly love their sound. Keeping them around allowed me to be more open to trying other speakers - if I made a major mistake with a speaker purchase, at least I didn't get rid of the Thiels, and they will always bee there.