I am currently using the V2 to cut 360 Brass, 303 Stainless, and Grade 2 Titanium without issues. The soft, annealed 360 Brass cuts like butter, while the Stainless and G2 Ti take some patience in figuring out feeds and speeds, as well as giving a much longer cycle time.
This video has been very helpful to see the capabilities of this machine in some of the harder materials: https://www.youtube.com/watch?v=7YfRNZbfjaY