I was wonder what the easiest end game instance is. I know the BWL is the toughest. Is ZG easier than MC or Onyxia?

For all of them you are going to need a good set of Fire Resistance?

Thanks for the information.

IMO BWL > MC > ZG > Onyxia

You only really need fire resistance for Onyxia, the last boss in MC, and a few fights in BWL.

For any end game instance the difficulty is in how to assault the encounter. Takes a lot of trial and error, the correct gear in some cases, the correct classes in others. but it all boils down to what kind of players are behind the scenes, trying zany ideas that just might work to come up with how to get the kill. SO while some bosses in BWL are a lot harder the those in say MC, some bosses in BWL are just as easy as some of the bosses in ZG. Ita really rather variable and dependent on the players.

gnomeregan > all imo