http://us.battle.net/d3/en/calculator/barbarian#WkYVPg!beV!acZcZZ
Most people insist that Furious Charge / Dreadnaught is better than Ground Stomp but I will go to my grave disagreeing. Ground Stomp with the increased effect range and vortex rune basically means that 33% of the time most of the battlefield is incapacitated. Not only that, but I get like 20 mobs within Revenge range of me meaning I'm guaranteed a full health bar every Revenge. Champs I think get a reduced duration on the stun but I think it's still 2-3 seconds. if I'm fighting champ I often try to fight them around as many other monsters as possible so that Ground stomp / Revenge gives me a full health bar every time. This doesn't work with enemies that hit like trucks though, such as Swift Skull Cleavers, but is great on archers, the little goblins that spawn from prophets, and lots of other kinds of enemies. Maybe if you like to kite / run away from shit / wait for cooldowns then something like Furious Charge is better, but personally I like to stand there and hold the mouse button down until shit is dead.
Sometimes I change out Threatening Shout for Leap, and on Leap I often flip flop between the armor rune and the Stun rune. I think the armor rune is probably better though. I use it as a normal defensive cooldown every time it's up more often than I use it to actually escape something.
The only champs that give me trouble anymore regardless of affix combination are Icy Quillbacks (easily the most
annoying enemy AI in the game, fuck these assholes).
Still, I can't kill everything. Certain combinations will always be impossible. Ones that come to mind are:
* invulnerable minion swift skull cleavers
* Anything with arcane in the bridge stores on the bridge of korsikk
* Desecrator Illusionist (Illusionist is usually a Barbarian's best friend, but when you have desecrator too it's literally impossible to get out of the fire)
* Fire chains are almost always hard. I can manage it sometimes but not others.
Strategy, not much. Soon as I see a champ I just pop WotB and try to burn one down. Run to waypoint / heal at the priest as needed. Micro my guy to get out of desecration / avoid arcane sentries / etc.
make sure your companion is geared. My enchantress does 5k dps which is a huge percentage increase over a barb's normal dps. Speaking of which, what's your dps? Mine is about 19k.
Edit: Oh, also I have about 600 Loh and i get about 2.2 ~ 2.3 attacks per second