My M22's are set up similar to yours. I just took delivery on the VP150 and am very pleased. It helps with dialogue for those that aren't sitting in the "sweet-spot" and really helps create a great soundstage. I contemplated going with the VP100, but decided to nip upgraditis in the bud and never look back and wonder what if. If finances allow get the VP150-IMO you won't be disappointed.

M22's, VP150, QS4's, HK 630, HSU VTF3-MKII