CS20m
The CS20m has got many bigger brothers and some smallers too.If you are interested in the CS series do not ignore this one.It's a real instrument to play not a cold keyboard.For me the most important drawback is there is only one LFO which controls the PWM sweep,the modulation wheel ,and amplitude modulation frequencies.It's very strongly built (a real Yamaha).It has got 8 memories .When you store a sound,you "bury" it under one of those memory locations and you can no longer edit it except from some basic parameters. So you have to think twice when you decide to store your sound.