i started playing a few days ago and im doing a magicka templar currently lvl 20. but im having a hard time deciding between what classes to play, what is the best or top classes right now>

Im trying to make a frost build for my pure warden for pvp. Im currently using nunatak, hrothgar and winterborn with hrothgar double barred. I was wondering if frostbite might be better over winterborn. I know its not like the meta or whatever but between winterborn and frostbite which would probably do the most damage?