Well , im thinkin of making a soso cold for pvp , but im not so sure wether to make a blizzard one or a frozen orb? ,, i play better with frozen orb but im not sure if its as effective in pvp .?? so please could u guys help me with my eq?? for example what will be the best for MAX DMG?

What types of eq shall i have in my chest?
and other things i should know ??