Larry nice pickin!! You've got that s910 singing.
I have the Crown 311a Headset Mic, although I liked the mic, at most of the venues I'm playing there's usually a grand piano in the room. The audiences I play to really enjoy some piano in between the arranger tunes, so I usually play a 10 minute set on during the hour long gig. I found myself getting tangled up in wires unhooking the headset to get to the piano.....so I stopped using it........... I don't want to invest in a wireless set up for the mic.