I was dualboxing at most, and now finally decided to quadbox(most I can afford now)
I want to run/have quad-shamy team for fun, and I already have one shamy at 56 that mostly solo grind there almost year ago, so I set up 3 shamys and run them to lvl13 yesterday =D

first thing to note: dual box much easier to manage, to loot, to quest, to grind, to gather mats =P

but 3box is sooo much more fun to kill anything with two spells from each shamy, and then get destroyed by lvl15 in westfal when you 10, lol

check out post by Kelevra where he clears all instances ownlvl with tribox =D
My new Triple-Box Team (Paladin/Priest/Mage + Druid/Druid/Hunter) [loads of pics inside!]

best regards =)