Hmm... that's a tough one tbh lol There are a couple I really depend on, but my #1 is definitely xperl. I cannot stand the default unit frames :thumbdown: My other mod I really really love having is ArkInventory. I can't stand not being able to see where everything is in my bags. And if I have to go through the 5 individual bags...well, it's just not a good WoW day :P