I haven't seen any yet. Would also like to see some third party reviews of the M5HP - IMO it would review EXTREMELY well. Not a sea change from previous Axiom speakers but one more step of refinement in the v2->v4 direction.

I haven't had a chance to A/B them with my Sierra-1's yet but I have compared the M5's with a few other speakers and so far they seem to split the difference really well between what I liked about Axioms and what I liked about the Sierras... and that's getting pretty close to "as good as it gets".

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8