I was just looking at some other manufacturers arranger keyboards. Looks like arranger keyboards in general don't offer the insert effect counts that keyboard workstations do. Even the Yamaha Tyros 5 has only 2 insert DSP effects - and the total effects unit count for keyboard parts looks very much like the MZXs (reverb, chorus, Master EQ, Master Comp) so the Casio compares favorably in that aspect with the high end arrangers. I'm not going to complain about the MZX series FX count.