All the methods are viable really. Just remember not to neglect your merc aa. I ran into the problem a few expacs ago where my merc aa were nonexistant as i never used mercs and just kited or root rotted and my merc's healing often fell behind when trying to molo some named mobs. Pet tanking enough to get merc's healing aa up makes moloing named mobs significantly easier. Being able to dps more rather than helping to heal/block pet's dmg makes downing mobs much faster and easier.