I've found that over the years we get used to the sounds we've been playing. I have played the SD1 for two years now but have heard so much about the Tyros that I was anxious to hear it. Finally a G.C. near me got a Tyros in and I tried it but was thoroughly disapointed with the sounds except for guitar. Also the feel of this keyboard is like far less expensive keyboards. In my opinion, there's no comparrison. I have never heard a sax sound or orchestral sounds as good as on the SD1.