We like centers, just that we like good speakers as centers, rather than design compromised horizontal centers (says the guy with the VP150).
If I had the room at all, I'd have the same speaker across the front, but for now the VP150 fits my setup best. I do know it is a compromise; I still feel a center is better than no center. If at all possible a standard vertical speaker is even more superior.
Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs