I've went through a few preamps trying to find exactly what you're looking for.
"looking to maximize dynamics as well as a touch more midrange bloom and dimensionality"
I had a Dennis had Inspire, a BAT, a few more and now an Allnic L3000. They were all excellent, but they were just a tad different from each other. None of them really stood out from the next. They will just be different..
I had them matched to many amps. A Modwright KWA 150SE, Audio Research VT100, VT80SE, Pass Labs X150.8, First Watt F8, and even an Audion Super Sterling.
I gave up as nothing really made my system elevate much more. Its already very good but I was looking for more.
Then, a month ago, I purchased a Kinki Studios EX-M7 power amp. Speakers and the everything upstream remained the same. It gave me dimensionality Ive never heard before. It is outstanding. Transients will surprise. A veritable treat. Bass handling is very precise, fast, not boomy and with a lot of texture.
Its dimensionality is what really got me. It's exceptional. Highly recommended,