People tend to like what they are used to and what they have invested it. Nothing wrong with that at all, except that it sometimes cuts people off from alternatives. If you like what you have then great. If you are looking for a new instrument though, if at all possible really try to investigate what other brands are offering. Sometimes it is good to make a complete switch because it allows you to grow musically by helping you find new tools and paths to create with.
Dave
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Wm. David McMahan
LearnMyKeyboard
JazzItUp Band
The Modulators