The DTs are really nice. I would get one of those over an AI and I have seen a barrel swap from .308 to .338 and hitting within 1/2" of each other at 100 yards.

Don't know if you have played with one of the Ruger Precision Rifles yet. It is not an AI or a DT, but holy smokes do they shoot. Barrel swaps are a simple change out and headspace at home.