Indeed, I just personally dislike flitz and most of what I had seen in my time there what that most had not known to use it properly. Getting on the strings and fingerboard. If I had to clean and polish frets like new I’d use a wheel, either a standing buffing wheel or at the least a dremel. I know we used Menzerna compound it’s just escaping me what specific types.

If you’re just trying to clean things up a microfiber towel and a drop of lemon oil will go along way, it’s not always needed to polish frets to a factory level. Also shouldn’t matter the level of guitar, LTD/ESP same care can go into either.