Actually he said outwardly the motors appeared to be similar. That says nothing about similarities within the motor, and frankly he doesn't even give any external measurements of the motor itself to confirm they are anything more than similar in appearance. Also, if you look at the actual measured T/S parameters you can see they are different drivers. The Xcon has a higher Q, lower Fs, lower Le and higher Mms. Plus the Xcon has slightly more linear excursion and I believe higher thermal power handling as well. It is still an Fi copy with a couple alterations. Quoted "Any differences from the Q are probably in the voice coil itself and the gap geometry and possibly the pole piece machining." Coil is different, suspension is different, magnet ID is different, dust cap is different, gap is different, pole piece is different, back plate is different, cooling is different. You can step off of your soap box now. -the guy thats built hundreds of them.