I have the SY-1. I prefer it to the sounds of the SDS. However, the main reason that I picked it up was because of the nicely spaced vertical sliders. Like the SH101, it's a nice box to jam with for that reason.
Also, damn it B, why are you cloning the dumb stuff like the "mic" inputs. I'm sure someone somewhere will think that's great, but it just seems weird and outdated to me. I suppose you can now build a vintage drumkit without the original brains, which cost a mint, compared to the pads, which go for peanuts.