I have owned a Williams Overture a Yamaha stage piano and a Korg B1 and now a Casio CDP135..I think the Korg had the best sound but with absolutely bare connectivity it cancelled our the good sound...the William Overture was my first piano and I liked it but maybe didn't sound as good as the Korg...the Casio has a great feel with graded hammer action keys but I'm not sure I like the sound to me it sounds a little plastic...idk I'm still getting used to it as it is my current piano...the Yamaha stage piano was the best overall however the keys didn't all work and I had to by the rubber strip and circuit boards for 16 keys and repair the unit..plus it didnt have speakers
