You probably can't go wrong with one of these bad boys. I plan on getting one as soon as I have some spare monies. I fear that will be well into next year, though. Fry's, the local electronic's store by me has sample keyboards on the shelves to try out. This one feels pretty nice. Don't know if the whole interchangeable boards aspect is for you, but be sure to check it out.
http://www.zboard.com/
