George K., when you get a chance, please offer a friendly comparison of similarities and differences between the Roland KF 90 and the SK 880. I have a Kurzweill PC88MX, which I have enjoyed very much, but I would like to buy it a companion. I use my keyboard for teaching and performing. Built-in speakers are not a necessity. The one feature of my PC88 which I can't imagine not having with any new keyboard I might get, is the piano-string combo setting. So, I'll probably have to get one of the Kurzweill micro piano units (which I'm assuming has that combo setting) to run thru the new keyboard, unless I end up buying another Kurzweill keyboard. Do you think I would be satisfied with the Roland KF 90, or the SK880, or would you recommend the Kurzweill PC2, or should I spend really big bucks(ug) and get the Kurzweill 2600(88 weighted key version) ? Thanks George. dogman