I purchased an OmniSat V2 CC last summer with the intention of upgrading my front speakers after the 1st of the year. Now the matching floor speakers are no longer available. Are the new OS3 FS speakers voice matched to my older V2 center? Also, what is the recommended subwoofer for the OS3 FS speakers?

I am probably too late but I have almost new V2 FS speakers barely used.  I bought it for $499 each.  I ahve moved to a home where the celing is 20 ft high and they don't sound as good.  I can sell these to you for $299 each.  I also have teh omnisat surreounds in box, never opened.  Can sell taht to you as well.  Let me know if you are interested.

You can mix and match the V2 and the OS3 as you wish, in terms of how they sound they are quite similar.