Yeah, the finish is nicer on some of the parts, but I did notice that their M2 screws (which need a 1.5mm hex driver) are either made out of playdoh, or they are actually 1.6mm. Both of my 1.5mm drivers were loose inside the screws and ended up stripping when I tried to torque them down.
Every M2 screw. The larger and smaller screws were fine, but anything needing a 1.5mm hex driver was giving me hell.
I received my hyperion 3900KV motor today as well, so my 250 got an upgrade. I had just finished tuning it by balancing all the head components, and the noise and vibration were definitely lower. I put this new motor in and it was like a completely different animal. Gobs of power, and the thing runs silent. Now I hear the blades moving through the air more than the motor and other noise!
I took it outside for a quick hover, and it flew very well. No worry about waking up neighbors because the thing is quiet now. This was also the first flight after replacing the dampers, and the helicopter had a much more "locked in" feel to it. I am definitely a happy camper right now.