Perhaps Scott M4 and zabble will chime in as they are the ones who brought these to my attention. I have yet to hear one.
The mixes are discrete and very satisfying. They sound great in DTS. The albums vary from beatless ambient soundscapes to very groovy grooves. :sun These final discs in the FAX series are treasures of electronic music to me. Be prepared for a hunt to find somewhat affordable copies. Before this Dark Side box set reissue, Dark Side XI was going for over $300 - though that is an extreme example. There's still a handful that I'm missing and I think they'll remain out of reach for me.