When I lead raids I try to be as fair as I can with looting so I don't get tonnes of loot drama breaking up the group. Spirit is a spirit user's priority, Mp5 is for healers, hit is for DPS, ranged is hunter priority and melee weapons are melee priority. ArP is... a grey area. In a 10 man I don't have a problem with this because everyone is much closer and loot is much easier to handle. However I don't like to lead 25's since people seem much happier to roll on loot with useless stats. Here are some examples -
1) Frozen Bonespike drops and an Elemental Shaman wins the roll. People complain that spirit items should not go to Shamans. I can:
a) Loot it to the highest spirit user, tell the Shaman not to need on spirit gear and watch as ICC general gets filled with "xxx is ninja!"
b) Tell everyone that the 100+SP gain on the weapon outweights the lack of spirit use, and watch as the spirit users complain about this.
2) DBW drops and a Ret Paladin wins the roll. People complain that this is not a trinket for a Ret Paladin. Do I:
a) Loot it to the highest roller who actally likes ArP and tell the Ret Paladin that DBW is not a trinket for them.
b) Loot it to the Ret because he won the roll and forget about it.
3) Midnight Sun HC drops and a SPriest (OS PvP Shadow) wins the roll. See #1, but with Mp5 instead. People remind me that I said Mp5 was a healer priority.
Edited 4th in: An Affliction Warlock wins the roll on a spirit/haste piece. People complain and say that Aff wants haste/crit and only an demo lock should get to roll on it.