Rogue Preamps - which one

I heard the Rogue Metis with my system and really liked it, especially with some NOS Tung-sol tubes. I am considering the Metis Magnum, Perseus, and 99 Magnum. Anybody hear them all to give me an idea? The Metis was lively without being annoying, hard, or harsh. It could use a bit more air and sound stage depth. I can move up in price to the others, but don't want to give up what I find so appealing about the basic Metis. The Magnum Metis is a no-brainer, but going to the others with the question.
Thanks