Help, which preamp to buy from my shortlist?

As Joey54 said above, it's hard to make a recommendation without knowing what amp you're using.  Also what speakers you are using is worthwhile information as well.

For SS, I'd take the Meitner.  I recently had the Museatex AVC1 and it was truly amazing!  I auditioned a Meitner PA-6 many years back and loved it as well.

You can't go wrong with a tube preamp either, but knowing the rest of your gear is imperative as this hobby is all about system synergy and matching.  So let us know what else you have please.

“11-21-2021 1:23am

Avoid the Meitner PA-6.

a friend’s Meitner PA-6 failed, unrepairable RC circuitry rendered it a $$$$ paper weight! He loved the SQ but...”

Surprised to hear this as John Wright does repairs on the Meitner/Museatex gear and was easily reachable when I had questions about my Museatex. The PA6 to my knowledge was Meitner’s first preamp