imho by the demos only.. I thought the yamaha demo's were far more impressive. I give roland the nod on the sax tho that was sweet... but strings, guitar big edge yamaha, also edge on accordian and piano.. the woodwinds and horns sounded excellent on yamaha but I dont think they had those in the roland demo.. , hehe I was very impressed with yamaha but I may eventually end up with ex-7 cuz of cost and 76 keys ... hehe still debating.. I WOULD BUY 76 KEY Yamaha at $1500! if they had 15 more keys!! GRRRR Why dont they make it!!

anyways everyone tastes r different..