So happy to find thoughtful and wise Thiel owners/community... I am hoping to get a bit of advice. My 1st pair of Thiel speakers were the model 2 2 (no point, I think is correct). I could never afford a decent amp so, I "moved up" to the model 3.6 driven by an upgraded McCormack DNA 1 with the larger toroidal transformer, balanced inputs and just about every other option that Steve offered as of last year. I have been very pleased with the sound. The 3.6 reveals every tiny change made in electronics, cables, etc. I have been able to tune my system based on what I am hearing through the 3.6 system. So, as I am reaching the end of my working life (48 years as a middle school teacher) I have saved enough $$$ to "move up" again. I am considering the model 3.7 that is perhaps 4-5 times the cost of the 3.6. No expectation that the 3.7 is many times "better" than the 3.6. My question is, how might the 3.7 be an improvement over the model 3.6? The only time I heard the 3.7 was probably 10 years ago being driven by Ayre electronics. I was not impressed as the the system was far too lean, although the Thiel clarity, articulation and soundstage were mostly present. Should I hold tight or go for 3.7s? Thanks in advance.