thiel 2.4 or 2.7 are probably as big as I would go. Might fly without
the sub. Or maybe 1.6 or 1.7. I saw a pair of 1.6 s at a local dealer a
while back.
I agree with unsound, get as much bass as you can afford. I went from the CS1.6 (no audible bass below 50 Hz in my room) to Vandersteen 2Ce Sig II (audible bass to mid 20s) and I could never go back to a speaker that can't go below 35-40. Also, the CS1.6 has a distortion/resonant mode in the upper midrange/lower treble. This was only apparent, to my ears, on certain recordings of female vocalists and at high SPLs. The CS1.7 has an updated woofer, so maybe not a problem with that model.
At any rate, the CS2.4 is a great speaker. My CS2.4SEs are as transparent, open, and resolved as anything I've heard south of $10K. In fact, I think they approach the very best I've heard regardless of price in those parameters (tbf, I can't do a direct comparison). Rob Gillum is going to offer "hot rod" kits for Thiels. I'm guessing an upgrade to the capacitors on a CS2.4 would make it competitive with most anything new up to $20K, maybe higher.