I haven’t heard these but personally wouldn’t use tubes in a phono pre-amp as a pre-requisite as the risk of extra noise is considerable. Instead, use tubes in your main pre-amp and roll those as you like. This will keep system noice quiter and provide consistency across phono and DAC in the main system.
I left my tube phone pre--amp (Project DS Tube - just above entry level) for the Gold Note PH-10 with PS. I couldn’t be happier with this pre-amp - versatile mico controller settings for the cartridges and the killer feature of matching equalization to the record manufacturer. I didn’t really consider how much this equalization would matter - it is genuinely a huge difference between RIAA, Columbia, and DECCA.