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It really depends on a lot of factors, such as your combat, strength, defense and attack levels. Personally though, I enjoy guthans in godwars dungeon, as great attack exp.
I would suggest Arms. Although it is more technical than fury and more instinctive than prot, the abilities and talents you gain are incredibly helpful and hard to replace otherwise. Also, you don't...
Non members:
level 1-10: chickens
level 10-20: cows
level 20-30: either more cows or goblins
level 30-40: flesh crawlers (level 2 stronghold of security under bb vil)
level 40-99: hill...