Ken,
So your Alleva-Coppolo has eclipsed your Celinder (and I guess the Nordy's gone entirely)? I'm teetering back and forth between which of these two to go for. The A-C sounds like such a perfectly balanced instrument, but I'm wondering whether the sizzle of the Celinder might not help my clarity in the mix by compensating for my own more old-school fat (rather than bright) touch. Just so the D and G strings still sound big enough, which I'm still wrestling with with my Sadowsky Modern. I'm finding myself moving my plucking hand toward the neck whenever I play on the D and G strings and back toward the bridge on the B, E, and sometimes A strings. I'd like to sound big yet well-defined, and to be able to happily leave my right hand in the same position independently of the string I'm playing on yet not have it sound thin on the thinner strings.
My own New Years Eve gig -- at a community college in Western NC -- wasn't 7 hours long...it just felt like it.