I have had an Alesis QS7 for several years, so my ears are used to high quality sounds. Now I am thinking about buying a workstation, something with great sounds, a basic multi track sequencer, arpegiator(sp), etc. While I work with computers all day long, I don't have the time to study forever just to lay down a couple tracks. Simple to use is what I really need.
The other main factor is cost, I can't afford 2,000 - 4000 dollars.