It's for me been a 4 way tie, all from the same Anime Series, Cardifght Vanguard Will+Dress S3 opening The Last Resort by Gyroaxia, DivineZ's 1st op Kirifuda/Trump card by V.W.P and the last 2 both by Sutopuri/Strawberry Prince, Will+Dress S2 OP Accelerate and DivineZ S2 op Shukumei, and fun fact, first episode of S2 of DivineZ has an animation error with in it's Opening