Note about Characters
If you want to be good and beat many people with BK you really need to have good combo-skills, else the character is a waste!
AE is considered to be the TOP Hunter.
SUM can be a real GOD on PvP if played very well (with all debuffs, sleep, etc.).
EMG and ARF are TOP HOLDERS! Their power on PvP is limited, so go for SMG/VRF for PvP.
All RF builds require STR for their base damage, VIT/ENE/AGI only increase % skill damage, so you need both.