Is anybody currently using an M22 as a center speaker. I'm currently using a M2 as center with M22 mains. Our usage is about 50/50 HT and music. The M2 is at times a little weak on dialogue. I love the M22's and am curious about throwing another in the mix. What is the effect on the soundstage with three?

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