Just got my pair of Sena's this morning, got them from Adam at Rocketmoto and his communication and service was excellent.
I must admit I hardly glanced at the instructions as all looked pretty self explanatory, so I fitted the first unit to my Shoe X11 helmet.
Now I'm no rocket scientist,but Ive heard people say they have had difficulties with fitting both the unit(using the clamp method) and the speakers to an X11, I on the other hand must have a different X11 as it was all done and completely as its described in the blurb(I read it after) In no more than 10 minutes.
I then fitted same to my Shoe DS Hornet helmet and all went the same as above.
I then charged both units completely, then turned them on, paired them to each other and paired my Iphone 3GS to one of them.
I then put on the X11, made a phone call and played a couple of tracks of music.
All sounded terrific and worked better than I expected, all this was done at home, mind, so I haven't used them on the bike or to speak with each other, so I suppose the next test is to pair one with my Zumo 550 and see how that goes. Will keep you all posted, but at this stage I could not be happier with the units and the service from Rocketmoto.