If you require maximum playability from your keyboard then you better take a look at the features of the E-MU Xboard 49 Professional USB/MIDI controller. Thsi keyboard is compatible with both PC and Mac and can be used either for studio recording or live stage gigs.
It boasts of the Xboard Control editing software that allows real-time control and easy programmability. Plus, it has the Proteus XLE desktop sound module (Windows) with more than one thousand preset sounds and 49 professional keys with Aftertouch. The keyboard’s Latch Mode, which is one of the top features of this model, can be used for triggering drum loops
Any musician will be proud of the portability features of the Xboard as it can be used anywhere with provisions for USB or AC power. Sans that, the keyboard can always run on batteries.