Hello Steve,
I think with your ceiling being too low it kind of rules out the Isis for you. This is from word of mouth and from what I remember reading about the Time in a review, but the Times actually has more mid-bass energy than the Isis and it's harder to tame in this regard. I did a lot of research and contacted quite of few people with direct hands-on experience before making the decision to go with the Isis over the Times. I'm confident for me it turned out to be the right choice and I'm very happy the Times worked out so well for you.
We're both very fortunate to being enjoying our favorite music with these speakers. Too bad they're so difficult to audition. I think a lot of music-lovers/audiophiles are missing out on the joy of hearing the music they love on these masterpieces! In fact I sometimes wonder if Avalon only wants to sell so many speakers.
Steve, are you still using the CAT amps? I'm pretty sure you had them way back with the original Eidolon.
..best..