I have them in most of my guitars. I have an L-shaped one in one of my EBMM EVHs, which is a pain in the butt because, with the block in place, you can no longer access that tiny allen bolt at the base of the whammy bar (the very bottom of it). I think more brass is better but, unless you can do everything with your whammy bar from above the bridge, don't block your access with an L-shaped one.