I bought my M22 v2 speakers back in 2008 and I've had absolutely no complaints for the last 6 years. The speakers still sound amazing. I've told myself that I would eventually add additional speakers and sub for a 5.1 system and it the day is finally drawing near. My question is whether I'll notice a difference in sound or tone of the speakers if I purchase a new center, surrounds and sub that are v4, while continuing to use my M22 v2 speakers as the mains?

If there will be a difference in sound, is it even going to be noticeable outside of a direct A/B comparison?