Ok so here we go. This is my update. Its a long one.
The new Audience FrontRow USB now has just over 50 hours on it. It's gotten a little better than it was right out of the box, not as dynamic as my 2 year old Ansuz X2, but a little better now. The lower registers have more authority than before but the upper registers are still subdued.
I'm listening to Tord Gustavsen Trio's The Other Side for example and the attack on the snare drum and cymbals are too polite and the notes don't have that silky sustain and decay like they do with my Ansuz X2.
Ansuz X2 definitely continues to win me over. It's highly resolving, more dynamic and alive. The transients are quick and I love that snap, crackle and pop effect. I love the open highs and that natural, effortless silky flow on percussive and cymbals. The extension of sustain and decay is absolutely intoxicating.

