If don't have this, you are mad!
At last a sample set that also captures the acoustics so no reverb needed.
I had a change of heart recently and decided to spend the money on the sample sets and not on the hardware so my 3 manual console comprises three, M-Audio Keystation 49e (£50 each!) connected via usb (1) and midi (2).
I use an IMac 2.4G not ideal as limited to 4gb, ELO 15" touchscreen and a Saffire.
Its far from ideal and awaits a pedalboard but I think its too easy to get carrried away with expensive hardware when it the playing that matters.
The keyboards are very good considering the price and have a decently responsive feel.
With the benefit of hindsight, a high end PC or Mac Pro with two ELO monitors would have been a better choice, and a Saffire Le would have sufficed as the inbuilt reverb is not useable over firewire.
IanJ