Hi. I'm a guitarist, and having played different pianos and keyboards for quite a few months, I'd like to get a keyboard with a synth-action, even if it means not having AiX sounds. I tried a Roland Go:Piano, as the local shop didn't have the Go:Keys, and although not weighted it was heavier than synth-action, which I didn't like. So, is the CT S300 the best synth-action keyboard? The more expensive keyboards seem to have heavier keys. The descriptions that say touch sensitive really don't tell me anything one way or another and I can't guarantee the shop I'll go to that has a range of Casio keyboards will have everything on display to try. Thanks in advance.