from using a rotor,prophecy,spire and gi pulse i would say still the rotor it just doesn't fail.
my experiences
spire pulsing is annoying and its to picky also speed feeds are like 40
gi pulse inconsistent feeding , lid is a pain to open during game.
prophecy just some days it would decide to not work properly
rotor haven't had any issues or problems to put me out of a game or stop me using it.