I don't know if this has already been discussed here but Drum Center of Portsmouth recently posted to YT a shootout they did with 6 different Ludwig metal snares. I really enjoy these comparisons, especially when they've made the effort to control for variables (e.g. size, heads, tuning) other than shell type. If you haven't seen it yet, I would encourage you to do so while not looking at your screen since I think seeing each drum as it's being played adds an element of bias. There are 6 different snares (BB, COB, raw brass, regular Supraphonic, Supraphonic Bronze, Copperphonic), all 6.5x14, played in succession by the same drummer. Unfortunately, they didn't include an Acrolite. I was really surprised by how all the brass shelled drums sounded so different. I didn't realize the plating (or lack thereof) had such a dramatic effect on a drum made of the same material. I liked the BB and regular Supraphonic over the others, with the Copperphonic coming in a distant 3rd). The raw brass sounded very harsh to me.