I have four guitars and I must say I'm very lucky, because every nut seems well-cut and adjusted. However, two of my guitars, the LTD baritone and the Gibson Voodoo LesPaul feature what seems to me to be simple plastic nuts. The other two have bone nuts.
I once heard that having a new nut fitted is rather cheap and can have a profound effect on sound and feel. Is that true? I'm not expecting any improvement in playability, but as a baritone the LTD could always need more tonal definition (bone nut?) and the Voodoo, being swampash+ebony fretboard, could do with a bit more sustain (Graphtech Tusq?).
Also, would Jaydee Custom Guitars be a place to ask about this in Birmingham? Or is there any other recommended luthier/guitar repair store in Birmingham?