I didn't really like the D-Tuna. Mine sucked and the spring seemed not to work as it was supposed to. The spring is a very poor feature in my humble opinion. The biggest problem that I had was that it tended not to get me exactly to D. It was usually 1/4 step off or something like that. But, anyway, the Tremol-no looks great for stabilizing that floating trem, adding versatility, tone, etc. I really like the idea. The EVH d-Tuna is just unreliable and tends to disable pulling up on the bar.