I use my synths to help write mostly. I started with a crappy Casio, then got myself a Korg X-3 in the early 90's. I now use a Korg TR-61 with a Fatar MP-117 tied to it on stage, and at home I've got a rack with Roland, Korg, Alesis and Akai modules in it, in addition to an old Fatar controller...