Paul, Roland's last update 1.03, improved some navigation problems...and don't forget there are many shortcuts by holding down a button..
I had a problem navigating between SMF/MP3 selection and lyric windows...but Roland's update fixed this in the last update..making it easier to toggle between..

Any menu driven OS can cause concerns when navigating on stage...but I have found the BK5 relatively easy on stage for major edits and changes....But as we know the ideal preparation of the Performances..eliminates this concern..

Donny, the transpose on the BK5 is hardly a obstacle...You push the transpose button once, and the screen is active to use the dial wheel for the value...It is just as easy (easier)as the procedure on the Prelude....but surely not as great as the G70 transpose..(always active)..

As for Multi pads...Some of us..dislike them..I for one...The arranger auto play is already too busy...everytime you add another multipad..it screams "fake"..

I am in the camp.."less, is more"....I have not worked with a vocalist yet (with arranger keyboard) that didn't appreciate muting unnecessary parts...All the fluff stuff gets in the way...of what you want to play...

My preference would be to have only my drummer, rhythm guitar player, and bass player...I will take care of the piano/organ parts..and maybe a sax , once in a while..even the over played "real sax player" can drive me crazy..