bow? ok then.
best one is mergen-pied piper
now for the 3rd class:
falconer:
+aoe burst
+more AAR for mergen skills
+aiming help party play
-need pet slot
wugushi:
+50% STR art make all skills stronger
+nice infinite AAR AOE skills
+pied piper can hypnotize enemies walking to the poison pool
+wugu skills + velnia monkey card= +30% universal dmg
-buy venom to fill poison pot
ranger:
+strong steady aim and critical shot buff
-need 4000+ crit rate to fully optimized those buff
-weak dps skills
hunter:
+1600 loot chance every 100 second for farming primus
+decrease enemy crit resist by -52%
(both need savage bow+ corresponding skill gems)
+great for bossing
-bad for AOE mobbing