Just to followup a bit on what Stephanie said about the ergonomics. I also own a TF79T, which is 99% of an AR2078 minus the fore stock where mine has an air tank. I found the AR stock to not only be too short, but like Peak said, the grip just doesn't fit human hands. There's a really odd what I guess is a finger groove in the AR stock that for me at least just digs into the palm of your hand. I did a fair amount of reshaping on my AR stock prior to bedliner, and while it feels pretty good, the Tau just feels GREAT! With all of the adjustments for LOP, cheek height, buttplate angle, trigger pull, etc, etc, you can really dial the Tau in till you can pick the gun up with your eyes closed, shoulder it, get comfortable, and when you open your eyes you are looking straight through the rear diopeter and through the front tunnel. I've felt tuned AR triggers, and they are fabulous, but the edge here still goes to the Tau, 5 way adjustable, crisp, clean, excellent. Accuracy on my Tau, or I should say Peak's Tau was great at the 10M it was designed for, the barrel on my AR is not so good....although I know this is the luck of the draw, I lost the bet I guess:)