I need some help to choose a new keyboard. It's mostly to do studio work, but I might occasionaly do some live shows with it. I already got a Roland E-86 (quite old, I know >_>), which I mostly use as a MIDI controller, or through a Line 6 POD to make distorted piano sounds. I'm not looking for something like a workstation since I'm already set up with my computer to record (Cubase SX and a bunch of plug-ins). I'm looking mostly for good ambient sounds (nice strings and pads) and good electronic lead sounds. The kind of music I make is something between Indie Rock and Prog Rock. I'm looking around the 500-700$ price range.
I've been looking around, and I've found some interesting keyboards like the Roland SH-201 or the Korg X50, but I'm not sure they're the best for what I'd like to do.
Thanks