WOW!
 
I did a Q&D 7 point measurement just to make sure everything is fully functional.  Dropped into my current project and I can't believe what a difference it makes.
 
I generally get compliments on my mixes, and there are only small tweaks I would make with ARC enabled to boost the bottom end a bit (I apparently have my sub a little hot), but everything sounds great with a flat target.  It's like a wet blanket has been lifted off of my monitoring system.
 
I need to do a proper set of measurements before I change anything, but DAAAMMMM - this sounds phenomenal!  I imported some commercial tunes to A/B with/without ARC enabled.  WOW.  Now I know why sharke has everything routed thru this.
 
I'm stoked

Yep. It's black magic for sure.

Is it better than Noah's? 

Noah's was a **** to get quiet

The more measurements you do the better it gets as well, so make sure you do all 13-14 or however many it suggests. The bottleneck in taking the measurements is getting the mic set up and the positions taped out on the floor - once you've gotten that done the actual measurement process goes quite quickly no matter how many you take. 

ARC 2 was one of my best purchases ever.

I'm glad the Q&D turned out so well.  Now I'm motivated to get my slide rule out and spend quality time with it.
 
I added a sub to make up for lack of bottom end and I thought everything was sounding pretty good.  I think I'll run it twice, with and without the sub (my monitor are Event PS8s, front ported).  I may not even need the sub.  I guess I'll find out
 
I'm anxious to try recording acoustic with this mic too.