My M80s are the v2's and the VP180 blends in very nicely with them. I really do not notice a substantial timbre difference between them. That's not to say however that v2 M80s and v3 M80s sound almost similar on a blind test (I have not heard the v3 M80s, so I don't know).

LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7