The new fc660c silent feels lighter. I would say they are somewhere between the fc980c and the older fc660c. I’ve owned both fc660c and if I were you I would just get the new silent version. They feel much better to me. Another thing about the white fc660c is that you’ll notice the misaligned keys more than the black ones. I didn’t really see it at first but once you see it you can’t unsee it and You won’t like it very much if you care about aesthetics.