I enjoy playing alts more than driving progression on a single class (probably burnout from non-stop raiding in MMOs from several years prior); however, I still feel like I'm a step above casual and like to push myself where I can. At first, it was to get all of my characters T4 capable, then it was on to T6. After 2.1 was released, I challenged myself to finish grift 30 for all of the different classes.

I finally accomplished that today. http://imgur.com/UfJrTEk

Barbarian - Vile Charge - http://us.battle.net/d3/en/profile/hotzp-1702/hero/36781133

Barbarian took the longest and was the hardest by far. None of my other characters required double Unity to finish grift 30, but it ended up being a requirement for Barbarian (I ended up using Int Unity rings from another character). I also had to create several keys to try 30 over and over again before I was successful as this build has such weak single target that I wasn't able to beat the grift unless I spawned the RG with at least 4 minutes remaining.

Crusader - Stampede - http://us.battle.net/d3/en/profile/hotzp-1702/hero/43706725

I struggled with grift 30 with a Holy Shotgun build, but it was a breeze after I switched to Stampede. Everything is knocked back and stunned, and you can just ride your spirit pony past anything that's annoying or will take too long to kill. Could probably push a little higher than 30.

Demon Hunter - Fire/Cold M6 - http://us.battle.net/d3/en/profile/hotzp-1702/hero/36781136

If you have M6, you can pretty much do grift 30 without any issues. I'm just shy of the 4.15 BP because I have such a bad pair of TnT, but I have a nice 2.7 Etrayu that I have stashed that's just waiting on a Gift. This is also the char that I use to generate trial keys.

Monk - Holy SWK - http://us.battle.net/d3/en/profile/hotzp-1702/hero/36781137

I have a ZDPS set-up as well, but SWK is essential to beating grift 30 for Monk. This is a very powerful build and I could probably push another couple of grift levels, but I need to give my fingers a rest.

Witch Doctor - Jade Doc - http://us.battle.net/d3/en/profile/hotzp-1702/hero/36781132

I also have a pet Doc that can do grift 30 (http://us.battle.net/d3/en/profile/hotzp-1702/hero/50195180). My Jade WD was my first character who could easily farm T6, so this build will always have a special place in my heart.

Wizard - Firebird - http://us.battle.net/d3/en/profile/hotzp-1702/hero/50046451

Pretty standard FB build with Meteor. I blew up another Int Furnace when I first started playing D3 pre-RoS because I didn't realize how good the old proc was and I figured I'd never need more than one. :(

In conclusion, I had fun and learned a lot about each class, but Barb needs a lot of work. Even with equivalent levels of gearing across my characters, it was by far the hardest to beat grift 30 on Barbarian. As stated earlier, no other class required double Unity.