I would probably put Axiom #1, followed by PSB then Polk. I did not listen to Polks but I did listen to PSBs before buying the Axioms. The PSBs were quite nice, with even more bass than the M60s, but I didn't feel they had the same clarity or "balance" as the 60s.

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