Thank you all for your thoughts!
The room is actually a great sounding room - at least from a live playing perspective. The walls are double-layers of drywall hung on channel strips with all seams caulked. I was able to pull off a double-wall on one side of the room. I know this is for sound containment, but I wanted to illustrate the efforts I've put into getting this right.
I used Auralex products for all acoustic treatment, and Auralex did all the room analysis for me. I've got a mixture of panels, bass traps, and diffusion. The drum riser is 4x6 construction, ported and filled with insulation, and sits on Auralex U-boats. Doing so really tightened up the kick and kept it in the room. I don't have much more I can do to the room, but I do think I can get more performance out of it as the ARC has shown me.
ARC is showing me three problems. I'm getting an artificial boost in the low-mids (around 200 - I'm going by memory here), and a boost in the upper mids. Also the bass just disappears the ARC is fully compensation by boosting a lot of the lower bass frequencies that are just missing in the original plot. Also, and perhaps the biggest concern, my friend pointed out the non-linearity of the speakers. When he would drop the volume, the mix would change. That was his biggest concern and point of consternation.
So, I hadn't thought about the idea that perhaps the ARC with the Truths is taking me places where a $1000 pair won't get me out of and that's a concern. However, even I got similar results to the Truth/ARC pair but got more consistent across volumes that would probably be a big help.
Again, I appreciate all of the input and I hope this additional information helps (should have included it all in the original post, but I was tired). :)