Nice setup, I had this on my Harley Road King; the mount was to unstable, XT keep vibrating off mount and feedback when I played it through my amplified speakers. I switched the Roady 2, it has a more secure base an and the sound quality is much better through my speakers. I picked up my setup through www.customcyclesounds.com. Keep us informed on how the XM is working, I have an extra base for my XT; I may trying it out.
Wireless headphones were my first choice but I put a pair of BOSE headphones in my helmet and when I am cruising to the casino in 5th gear its almost hypnotic.. I can still hear horns and sirens so I am pretty good to go.. The base had a little vibration but heck.. the whole bike vibrates.. It never falls off though..
Thanks for the compliments and just a quick note.. use headphones with volume adjustment in the cord or use the wireless remote control...it's a pain controlling the volume while driving without either one of those..