XtremeMac FS1, an iPod's best friend

After weeks of intensive use, I made my mind: Future Sonics EM3 now has a heir, XtremeMac FS1. In my humble opinion, Let's say that it is no less than than the best intra-ear iPod earbuds set... and certainly one of the best models to listen to your music while making sport : the best for summer!
The EM3 now has a challenger, and the reason to that is simple : the FS1 was made by Future Sonics in cooperation with XtremeMac. And this partnership will make it possible, for instance, to find the FS1 easily in France : a good point, as the EM3 could only be ordered via the web.
A big thanks to Future Sonics. Thanks also to Gotchi, greg57 and linathael for helping me with every step of this review.