I know the Core nuts are inexpensive, and a common choice, but I read that they're narrower and leave a line that used to be covered by the SE nut, which I'm not down with. So I'm considering other alternatives, either Bone or a fancy composite one that's probably much like the Core nuts. Tone first, aesthetics is a close second. What do you guys think? Can any of you who put the Core nut on there show a close up photo of the gap it doesn't cover? That would be helpful to see.