If you prefer solid state, the newer Nelson Pass designs are said to be superior to the Xono. I think there are two, XP15 and XP25, but I have not researched the model names.
For tubed units, and given the large investment you've already made, the sky's the limit. Think of Allnic, EMIA, Dolshi, and my personal favorite, the Atma-sphere MP1. The Atma is not often listed among top phono stages, I think because it is a full function preamplifier. But it's superb. There are other choices as well in this kilobuck category, of course.
For tubed units, and given the large investment you've already made, the sky's the limit. Think of Allnic, EMIA, Dolshi, and my personal favorite, the Atma-sphere MP1. The Atma is not often listed among top phono stages, I think because it is a full function preamplifier. But it's superb. There are other choices as well in this kilobuck category, of course.