Hello! Thank you for hosting this forum, which I've only scratched the surface of. The best and luckiest purchase I ever made on ebay was my Kurzweil sp4-7. The sound quality is unmatched and so much better than other keyboards I've used. It's been very easy to learn and use as well. I really only play for Sunday morning worship, but I do look forward to those times to see what I can discover about the keyboard next! Thanks again!