I remember that the KP100s had pretty bad reviews. The old KP500sn has very good reviews, but the current models are supposed to be much better than the KP500sn. Stereo and some mixer features all in one box do make life easy, but the RCF TT08 must be something else. I never heard it in person. It seems that now there is a 2nd version of the TT08. Each speaker sells for $2,000, but I found a vendor that sells one for about $1,400. Hmmmmm......