As I've detailed in other threads, I've had to look for alternatives to my Thiel 3.7 speakers. It was very problematic. Almost nothing sounded as good, and I could not find anything I truly found an "upgrade" in many areas (one or two maybe, but not the whole package).
I did sell them and have the slightly smaller Thiel 2.7s which sound very similar. I've kept my ears out for a speaker I might add to my stable of speakers - for me Devores 0 speakers and Joseph speakers do some things I like a bit better than the Thiels, but the Thiels are such a cohesive over all package of great tone, imaging, palpability and dynamics they are hard to replace (hence...I don't plan to replace them, but only possibly add another pair of speakers).