I'm selling my X5D only because I find I still want an arranger keyboard around the house. The X5D is 64-note polyphonic and is 90% of an X50 at 50% of the cost. It's a lot of board in a very compact package. Check my eBay auction - ends Saturday 4/21.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ih=010&sspagename=STRK%3AMESE%3AIT&viewitem=&item=200100627992&rd=1&rd=1