The wireless is way better than the classic LS50 too.I assume you are referring to the LS50 wireless. I really liked the LS50's when I owned them. They were great little speakers. The MC are a completely different league of course. I just do not currently have a need for a second set of speakers and at this point in time I would not consider using a wireless speaker in my main 2-channel system.
Not saying to buy, I am saying you need to hear 'em.