I just found a stream with a guy named Raiz, doing a3 runs and getting 80mil exp per hour. He got some special tempest rush gear, which is VERY efficient. He's also doing legendary giveaways. He got 2 full chars, and some in his chest - All going down tonight!!
I'm using this build on my monk now, and without really using much gold i'm farming x3 as much exp/hour than before (: