I would look into getting an Alaap Audio full function pre by Nick Doshi. It could pair nicely with your amp. Clean, fast, extremely neutral. No coloration or bloat. On the emotional level, it keeps me enthraled night after night.
Just as a disclaimer, I've only heard a few from your list, the Supratek, ARC, and Hovland.
Just as a disclaimer, I've only heard a few from your list, the Supratek, ARC, and Hovland.