I also found the SX-90 to be more to my liking than a Yani 901. The Yani sound had a little more crispness/reediness to it and the palm keys were easier, but it lacked the full tone and response of the SX-90. For the record, mine is an SX-90BN one-piece, and I have played it for about 10 years, so it had an unfair advantage in the playability department.