I'm 4 boxing right now and I do one group (pally,priest,druid,hunter) w. my gf (warlock) which is great as I set FFA and she loots while I kill shit.I tried w. another group when she's playing something else (warrior,shaman,mage,lock) and LFG for a dungeon sucks as all 4 dungeons I got all had dipshits deliberately trying to fuck me up as the 3rd dps aka pull every damn thing and run to my group. I ended up just doing regular quests on them and to hell with dungeons unless they are on the way to something I want.To me that 5th account would be handy but I already have them at 43 and leveling another to 43 to group w. them and not do RAF (current accounts don't have it) would be a pain in the ass.