Johnmcalpin, I hear you on the amp issue. I bought a pair of 2.2s recently just for a spare pair of background speakers and am really, really impressed by them.
In considering the 3.7s I have to factor in getting a new, larger amp. All my existing amps are rated at between 100 and 150 wpc into 8 ohms. I question whether my ML amp, even as a high current amp can drive the 3.7s. I love the sound of the 2.2s driven by the ML so would plan to also have to buy a new, much large ML amp (even used that is several thousand more to the price of the speakers).
To get these speakers, I think they would have to outperform my Wilson Audio Duettes (which are only 3 mos. old). I would then consider selling these to get these speakers. These are darn good speakers and not sure (other than in the bass) whether the Thiels will be able to top them.