From what others have tried, a M2 or M22 will give you better off-axis than a VP150 or VP180, however you'll not get the depth in male vocals and bass that the VP180 offers. IMO, it's a trade-off and you need to pick whatever will suit your goal and what you can accommodate physically.

Bruno
M80s/VP180/QS8s/EP600/AVR-890
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"The problem is choice..."