Interesting topic -Rebuilt vs "mildly" used. Rebuilt IF, you know the rebuilder is experienced and skilled in this delicate craft and has proven results such as customer reviews. Industry recognition would also be a plus. If rebuilder is local to you, it might be prudent to visit the shop and check out their work. In a perfect word they may even have a TT or two set up to hear the quality of the rebuilds that you are considering. If not local does rebuilder have an active website so customers can communicate with them. As for used if there is a source that you trust, such as audiophile forums, Audio dealers, etc. that might be an option. In either case Happy Hunting. Ps; there are some quality new cartridges available at affordable prices if you shop around
Refurbished / Re-tipped Cartridges - Are they worth Buying?
My thoughts around rebuilt carts, do they convey the same characteristics as the original designer envisioned and intended . Even with full restoration like new cantilever, stylus and suspension repair etc; much of the original design attributes are gone and you are now listening to the works of an individual who have pride themselves as rebuilt wizard.
No disrespect intended for the folks in rebuilding business as I honestly believe they are incredibly talented to rebuild such a fine instrument.
What are your thoughts, would you buy a completely rebuilt cart vs a slightly used cartridge….after all you’re mostly paying for brand pedigree, its signature sound and exotic materials to make such a fine product.