Part of this will of course depend on quality circuit design and having very low noise tubes. But I think not enough emphasis has been put on what type of cart you are using. Issues with tube-related noise are going to be much more important if you are using a LOMC without a SUT. If you are using a SUT (don't have any experience with these so can't speak to pros/cons) you are likely to have less tube noise issues since the phono is amplifying a larger voltage signal. For LOMCs that are very low output, you either need an exceptional tube design, a SUT paired with a tube phono designed for MM-level input signals, or a SS design, which again has to be high quality with very LOMC designs but will usually result in a lower noise floor.
However, Atmasphere's comment above gives some interesting food for thought, and I find that he is someone whose advice is usually worth taking into account, even if you decide in the end that you have other priorities or preferences.
So, yup, like many things it comes down to personal preferences and system synergy. The hobby is one of trade-offs and trial-and-error. Forum opinions can be valuable, but always better to hear for yourself, preferably in your own system.
