I'm running in a decent Hellfire Ramparts PUG and Garotte String Necklace drops. The paladin (retribution) and druid (balance) both roll greed. The other two pass.
My current neck piece is Sunstone Necklace of Stamina (with +33 stamina). I think about it and decide it is a lateral upgrade, something I can use questing (I'm a 2H Imp Slam Fury/Arms hybrid spec) but not tanking where the 33 stamina would better serve me. So I greed roll. The Druid won the item and I say gratz and we move on.
Was my assessment of the item's relative value to me correct, or should I have need rolled? I don't automatically assume a blue item is better than a green item, and it would have only been a set piece and not an all-the-time piece, so I thought it fair to give the others a fair shot at it. Doesn't speak well of my inner pirate (arrr!) but I do try to be adult about looting.