as a wonky build enthusiast the two best builds ive made were lvl 30 phys/light shock chargers hybrid and my lvl 12 vlld sac shiver sorc w/ min dmg. both could compete in open duels, although i never won an ft10 or ft25 with the sac sorc vs any top tier builds. plenty of ft5s, and i always got wins in the ft10s, just never won one. holy shocker is fully viable, but has a hard time with ES sorcs. and requires a full on l8z approach of using FoH vs barbs.
my fave char is still the poi dagger lvl 30 sin tho, fun and viable in tvt as a support char and can 1-2 shot almost any build if it can hit them.