The ego/protege will be slightly more efficent.
The Drone uses more o-rings which equals more maintance. Thats not the reason i dislike it. I dislike it because the bolt train is well... different i guess. I'm used to dyes and quests where it is simple i guess haha
YouTube - TechPB Supergun Show - Macdev Droid Part 2
This is what I'm talking about. At 1 min in he takes out the bolt train. Also I have to say that I'm not a big fan of tech pb, this is just the only vid i could find of the bolt train of the droid.
Heres a vid on the drone
YouTube - MacDev Tactical Drone Internals
I just don't like unscrew the bolt apart.