The V4 does the room correction in a very interesting way and it does indeed work very well. The Accuphase is said to be top notch. The less correction the better though. I'm sure that you have the speakers placed as well as they can be placed but you may find that a little time and effort lugging them arround pays off. A customer recently turned me onto a site called audioperfectionist.com. It boils down most all of the useful advice you can get into a few articles.
Good luck!
Good luck!