Hi Soundboy
I have a Roland RS-70 that I bought brand new last November. I have just bought the Roland G-70 so was about to get ready to put the RS on Ebay. Let me know if you are interested.

Most if not all of your requirements are covered (I think!) In particular the Piano sounds are excellent (the default 'RS Grand' patch being absolutely stunning imho).

Best wishes whatever you decide on
Tony