I have a EXI v1 heli that was given to me, and it flies ok... (in the closet now don't fly it) I can definitely tell a difference in the Align, everything is so much smoother and it flies better.
My v2 is all Align, except servo's and gyro which are HK and it still flies smoother, and more responsive than my EXI (to me that is).
I have a HK pro with Align DFC head, (frame is the only HK part) everything else is align including tail boom/tt and bearings.
This one I built from piecing parts together from HK, ebay, and the align store, just finding deals here and there.
I will say after the trouble I had with HK bearings and clone parts, I am Align from here on out.
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I will say what few Tarot parts I have used have seemed like better quality and so far I am happy with them.