i own the ep125, and have compared it to the paradigm 8 and 10 inchers, as well as a 10 incher by REL or REEL (can't remember the name, but it was 700$!!). I find the EP125 is better than those subs. The ep125 is faster, and more musical. It's not lazy either, so it won't boom forever and ever like the subs you hear in cars downtown! it also blends very well with my M1's, and once I move out I will put M3's and a VP100 in front.
If i were you, i wouldn't worry too much about the power rating if they are close. it would only make a difference at quite loud volumes.