I sell all the Yamaha and Casio models and I have to agree with Squeak here. For the money you can't beat the Casio CTK900 (a 61 key version of the WK3200 at $199.00) or the WK3200 with 76 keys and a smart media card slot for $299.00. The Yamaha's just don't have as many features and both have very good sounds.
George Kaye
Kaye's Music Scene
Reseda, California