I remember being pretty successful myself with Double Attack + Leap on my Barb. Granted that was just Normal mode, so I think I put most everything into more damage instead of more health, but it worked.
Maybe Google it if you wanna know the more precise stat allocations. I can't remember off the top of my head.
Whirlwind is pretty good for higher difficulties if you have some +Mana on Hit stuff, and if you can get good at whirlwinding.