Well, I've been itching to try a tri-band router and pulled the trigger at $285.98 from newegg. The $400 was way too steep. Even at $286 I feel like I spent a bit more than I should have.
It was somewhat sobering to read the review. Tim, thank you for taking the time to test it. I feel like I could have saved $100 by getting a standard AC3200 instead of this. Maybe future firmware updates will help? Anyway, it's good to know that the better performance is on the lower 5GHz band and stick with putting devices that are closer to the router (xbox, laptops) on the upper 5GHz and cellphones on the lower 5GHz for better range.