Paradigm Studio 100 V3 versus the Paradigm S8 V1

Hi All ,
 I am currently using the Studio 100 V3's in a dedicated 2ch system ( music only) and want to move them to another room , I have found a good deal on some S8's to replace them in my main room , question is , would they be a step up from the 100's or a lateral move , my problem is the closest Paradigm dealer is 2 hrs away and all he has is a used pair of S8 V3's which will not sound the same due to the tweeter and the ones I'm considering are abour 3 1/2 hrs away . Powered by all Rotel separates and no subs . 

  Thanks