i use one char to rush.....95 blizz sorc with a 95 A2 merc. The main reason i use a sorc is because of the MF and the first time killing a boss bonus drops (found 2-3 maras off andy doing this). Plus, whenever there is a cold immune crowd... i just static and let my merc with Reapers (decrepify) kick their asses. But my sorc cant take Hell Ancients, so i own them with my hammerdin.