I love my EM2000. It is by far the most expressive keyboard I've played. That's because of it's Dynamic Accompaniment. This feature changes what voices play in the left hand part according to the pressure of your fingers on the keyboard. It's hard to use at first, but gives very nice results.
Plus, the acoustic pianos sound great. And there are 1000's of styles available for Roland. I could go on, but no more time. You SHOULD PLAY one first to check it out. That is what everyone should do before buying.
Tom