I have both a 'real' X2 and an i2 converted to an X2.
I much prefer the converted X2, as I mostly ride on-road.
It is a bit faster due to the larger tires, and it goes downhill much easier than the real X2, due to the software differences, which cause the real X2 to push back and slow down a lot.
This causes many novice riders, at least in my experience, to have to step off the machine to keep from falling backward.
Again, everyone's feelings on this may be different.
-i
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