Well, I don't sing and seldom use the media player so none of these are of concern for me. It does, very well I might add, all the things I need it to do as a pure instrumentalist. Like Dave said - the sound is the important thing for me and it is outstanding! As a Ketron newbie, I have not had any issues with navigating around the OS.
Deane
Glad your getting along well with teh SD7 Deane..... we all use our KB very differently and have different needs. The SD7 has Many features, some players might not use them all but it's nice to know they are there, they take time to set up and make it "Your Own"... but I will agree with you the SD7 sounds fantastic !!