It was my favorite speaker at my first RMAF, back in 06, with Response 100W tube monoblocks, (and modwright tube pre, I think.) I was a fresh noob, but the good impression held up over time. I've recently heard them again at Henry's (bmr3hc) and they're still awesome, again with a great tube amp. Great bass, amazing transient response for a TL speaker, even with tubes.
I heard their newest hifi monster speakers with triamped Halcro at RMAF08, interesting, but only cerebral.