After all said and done the strong breed is reaper toll merc. I tried a few different designs and I will have to say druid > hammery. Just need to know what your doing. Buff your bear, use reapers toll, add kickback and c/b + ias + aura dmg to "pull enemies you" instead of chase them. pvm you can hit 18k hammers at pvm max. nado hits near 14k at max. Bear swings for 1700 on skill point + heart of wolvering + 100%(+) dmg + %50 from merc decrpt. Nados shoot faster and hit multple times.
Druid are best.