@james_w514 thanks for the input. Interesting, I thought the Audiovector SR1 (in Avantgarde Aretté form) had very good bass - not thunderous by any means, but very "true" in that you mostly don't notice it, but it really hits you with speed and trueness of tone when called for. I thought piano and cello sounded great, though pop/rock sounded light. I'm coming from very lean Merlin TSM's so my bar for bass is probably low. I agree that in terms of raw speed and resolution, they are really tops, better than the majority of megabuck stuff I've heard at shows.
I will seek out an ATC dealer and if they seem like they might float my boat, see if I can get them in-house...
I will seek out an ATC dealer and if they seem like they might float my boat, see if I can get them in-house...