I have a WK-1630. I play it through a Peavey60 and Squire10 out through the head jack. I have played my board for about four years now. I have been very happy with it, until I had played a Roland E-600 and really liked the organ and rhyums on the Roland. But now I see the WK-3000 and WK-3700. My question is. Are the sounds in the new WK's alot better and are the rhyums alot better? I play alot of Doo-Wop and Country Classic I just haven't gotten the country two step and balland rhyums I wanted or the polka rhyums. How will the 3700 conpare with the PSR 2000? Please give me some insight or help. Thank You