Squeak I personally think judging by your post that you DONT need an arranger KB at all for the kind of music you looking to create, BTW didn't you buy a 2k & didn't like that either? did you actually buy a 3000/1500?....I'm led to believe you would be better off using a Synth Workstation like the Fanthom X or Motif, etc .. would be better fit for your needs...great sounds & more importantly more flexibility & on-board features to CREATE your own styles & sounds.
In this game you really need to get what you specifically need to accomplish the job at hand. The 3k is an awesome unit in so many ways for so many players for many reasons, I hope you find what your looking for down the road.

good luck