I have the Beta 20s and the C360 at my home. The CMMD drivers can be a little odd to drive. They are such rigid drivers. Some people prefer a more flexible driver.
As far as the sound goes, my feelings are a bit mixed.
- Love the sound of them with music when being driven by my Panny XR55.
- Love the sound of them with music when being driven by my vintage Sansui receivers.
- Not so sure of the sound when they are driven by my Music Hall integrated amp.
I suspect the Music Hall amp isn't coloring the sound much at all and just presenting them as the neutral sounding speaker that they are. However, I do like the detail that comes out of them when driven by other sources.
Many times products get knocked because they are not paired with the right gear - for proper synergy. Ha - is that an audiophile term or what? No, seriously, I think the Betas are hard to beat, provided you're driving them with a source that makes them sound up to their potential. I'm actually surpised how good the sound is of the $200 pair of Betas when driven by my $210 Panasonic receiver in dual-amp mode. Certainly compares to many combinations I've heard where the speaker/receiver prices were 3, 4, or 5 times the amount of my current setup.