Only a couple come to mind that are true time and phase aligned. Matt, I am searching the net to see a good list. I came across this posting about this subject. Not sure if it means anything other than how a speaker will sound off axis. Personally I have my position and don't really listen off axis, lol...I'm sure that's just me though.
"As for the companies you mention -- Magico, Vivid Audio, and Rockport Technologies -- none makes speakers that are time- and phase-accurate, even if the sloped front baffles of the Vivid and Rockport models look as if they might be. In all cases, they use higher-order crossovers to greatly reduce driver overlap, which have more phase shift " I like the Rockports I've heard. I"m just not a Magico guy (sorry). Heard Vivid once, but not enough to really say one way or the other. I know I don't like the older Thiel's and have no idea what they are making now days with the new company.
Looks like a company has to make their own speakers to get this right due to the overlap of frequencies. Off the shelf or even modified won't work based on some articles I've been reading up on. I"m sure someone here will have other ideas. This has become my favorite go to thread for learning and some of you have changed my mind greatly.
On another note, I have heard the whole Vandy line yesterday and the Wilson, Dynaudio gear (upper end stuff) the day before. All on Ayre Reference 20's. Those amps are possibly the best I've ever heard and yes I've heard many of the esoteric lines out there. I can't do Wilson's still. No emotion for me or layering. Very accurate though. I liked the Dynaudio a bit. Something was missing for me though and I can't even tell you what.
Back to Matt's question, but wanted to share.