I just went from a VP150 (v2) to VP180 (v3 so to speak, since it really is v1 of that model... hehe...) and added a second pair of QS8s (v3) to my existing QS8s (v2)...
I look at it this way:
1) What are your options? They don't make v2 stuff anymore...
2) The changes have been noted to be minimal fine tuning. It isn't like the v2 versions were bad or anything.
John is peddling the vertical center (
), but it does have merit if you wanted to give it a shot.
2-M60s, VP180, 8-M3s, SVS 20-39PCi, DIY Sub, 8-Shakers, JVC RS45, Anthem MRX-1120