Cartridge Upgrade - Nagaoka or Goldring

Though I don't listen to classical, I do listen to acoustic guitar and vocals.
It never sounds what I would call "harsh" but it can be a little edgy for some tastes. Of course, a lot depends on table, arm, phono and cable.
Also, classical is a very broad genre, piano solo is one thing and full orchestra another.
If going with Nagaoka I would go with top of the line MP500. Another possible option is Audio Note MM, more expensive, I think. I have not heard it. But after the table upgrade not before it. In my view, you start with a very good table and go from there. Besides, table can last for decades if you take care of it, and it does not require a lot of care.
When I bought my Nottingham Spacedeck/Spacearm lightly used for $1350, it was very expensive to me but I am glad I did buy it.

I've been using Goldring 1042 for years with the Nottingham Spacedeck/Spacearm and have no plans to replace it. Bought it from analogueseduction.net from the UK. Sounds very good with all kinds of music that I listen to. Can't speak of classical music, but for jazzrock, acoustic music and vocals I find it satisfactory or better. It is very alive but does not 'throw' the sound at you, very dynamic. Well, so is the Nottingham turntable. Nagaoka MP500 might be more refined but I like the sound to have some 'edge and bite'. Yes, upgrading your table is a good idea indeed.