First 1 with frost charm : gives you more cc bit harder to control than the 2. build but this is the build i use.
Volley or bombardment that doesn't make much difference in PvP
2. build it has bombardment instead of volley but u have recoil lvl 1 which is bad and u don't use frost charm
it much easier build to control and i think this is the 1 u should start with and later change to the other 1