Wrong....I bought the S910 because its smaller and lighter then my Tyros units were...and sound just as good for my needs....
Yamaha units are the terrible SMF players, let's not forget about the hand claps.... nothing can touch a Roland for SMF in sound and editing capabilities....these arrangers are just backup tools to accompany my singing first and foremost as many of us on stage gigging pros know...SMF at this stage of technology is "Old School"
I just mix it all up in so many ways using live play with styles, Mp3 backup files that I record and multitrack myself, & a laptop for flexibility for my needs also with my KB to make the show successful