Masterie discussion Jarvan IV top

Hey guys,

I really can't make up my mind on the right masteries for J4. Mostly because of the weekend allstars. Thunderlord and Undying Grasp has been picked like all the time. Rethinking about it, i think Fevor of battle might not be the best for J4 top like i used to pick. Thunderlord seems a right pick since u mostly hit 3 times when u combo with J4 in lane. Undying grasp has been a very surprising pick throughthe 1v1s and i seriously consider it to counter the lack of sustain from J4.

Any opinion?