Hey! I wrote a guide for a decent leveling spot, you can go from 55 to 60 on hell in a few hours by this method
You don't need too much gear, but the +exp gear will improve your exp/hour a lot since you'll kill a lot of mobs, and better DPS will make the killing part faster. It's easier as ranged, but doable with anything and possibly you can make a macro/script for it
1. Start on this Quest
2. Do the first part of the quest, pass the guys talking and talk to Asheara
3. Kill the snakes and you'll get the checkpoint
4. Now exit this room and pass through the enemies, they won't hit you cause they're too busy transforming, but they'll follow you
4.1. You can use skills like Vault for DH or Spirit Walk on WD, Sprint on Barbarian, Blink for Wizard or the weird charge for Monk to make it faster. Ofc movement speed works also lol
5. Run till you're in this spot, near to the green wall blocking the path
6. Spam everything till the room looks like this, blood and dead bodies everywhere
7. TP, leave, resume and repeat, you'll start from the room where you killed the first snakes on Step3
I know isn't the fastest way while the ZK method last but it works fine and it's a legit way ( if you don't script )!
See ya!