The distinction between arranger keyboards and Workstations are for the most part completely ficticious. An arranger can pretty much do most of what a workstation can do in terms of sequencer, sampling, and sound synthesis. The only real major advantage that a workstation has is the ability to route effects in a more complex way to various tracks. Many producers today produce the most phat beats and grooves by looping and chaining the loops together to make a track. Thats excactly what an arranger does but in real time.

The difference between arrangers and workstations for the most part is just perception. If you switch off the aranger functions on a top of the range arranger you actually have a pretty decent stand alone workstation. Switch on the arranger and you get a work station on steroids!