There are lots of threads out there about the S991, but I'm curious about the S981. Anybody out there play one? Are we generally satisfied with the experience? I'm looking at buying a Yani soprano in the fall, and I'm trying to do a little research on the 901, the 981, and the 991. I'm sort of sitting on the fence right now, and the 981 seems to be a nice middle ground. Any thoughts? Thanks!