Purchased my YC61 a few weeks ago and I am totally impressed with this board. Can't say enough good things about it so I won't except that Yamaha has FINALLY got the B3 sounds right with enough tweakability that I am totally satisfied as a bluse musician. Yes, the rotary sound is not quite spot on but close enough so that only a die hard Leslie person would really notice it.
Now one question...since there are supposed to be updates in the future. The only sound I would love to have added is the wood flute as found on a MODX. IF I had that one sound I would sell my MODX and buy another YC61 and use and a double keyboard. So, please please please, hint hint