The droid IS smoother, now.. the drone gets shipped with the new GT solenoid, wich should increase performance further. The same solenoid is possible to purchase for the droid too.
With that said, both are good choices and you cannot go wrong with eighter.
The Drone will be easier to do maintainance on though as it has very few orings and parts compared to the droid. The best thing to do would be shoot both of them and get a own opinion. Good luck.
It should be pretty easy to get parts for eighter marker these days.
Macdev Clone VX Brown/white
Safer 73/45 with Ninja SLP.