I spent quite some time looking at the Monitor Audio Silver series when I was speaker shopping. Very good for the money. I preferred the S6 over the S8. The S6 didn't quite go as low as the S8, but it had a clearer midrange and much more balanced sound to my ear. The extra driver of the S8 seemed to muddy things up a bit. The new Silver series is supposed to be pretty good, too, although I haven't had a chance to hear them.
I own both Axiom and Monitor Audio, but not the models you are looking at.
General consesus is that the Axiom M60s are pretty close to the MA Silvers. At this point, the main difference in price is going towards the finish as both speakers sound excellent.
