Group Loot vs. Need Before Greed

As our Party Basics page explains this quite nicely, you may want to refer there. =) You can find it here: http://www.worldofwarcraft.com/info/basics/parties.html .

Q u o t e:
Group Loot (default) - When an item equal to or above the threshold (details on threshold below) is on a monster that is killed, everyone gets a pop-up box on their screen with the item and pass or roll options and a timer. Anyone who rolls, displays a number between 1 and 100, the highest roller of all those who choose to roll automatically gets the item. Anyone who waits until the timer expires automatically passes. Items below the threshold are taken care of by normal round robin rules. If more than one player ties a loot roll, a random player will receive the loot. An interface option, "Detailed Loot Information" is defaulted to 'on.' If you turn it off you will only see the roll and Need/Greed option of the player who won the item rather than information for every player.

Q u o t e:
Need Before Greed - Same as group loot, except players who cannot use the item automatically pass.

I hope that helps; if you need further clarification, just ask! =)

I'm sure you could ask around on our UI and Macros Forum and they'd be glad to lend some insight, yeah?

Q u o t e:
Does group loot have any bias based on whether or not 1 player may actually NEED the item when going against a player that already has a better item on his/her person? If not then how does one protect himself from losing a roll on an epic that he needs to a person that already has better epic on him/her? I would appreciate a GM's response since they aren't in a position to correct that situation once it has occured.

Thank you

I'm afraid if you want a 100% foolproof method - you need to master loot.

Of course - that means you have to be able to trust the person with that authority to assign loot.