Pass Labs 2.5 or Mark Levinson 26

I am in a dilemma. I recently purchased a Mark Levinson 27 power amp and I don't like the way it sounds with a Alchemist Forsetti preamp. I'm thinking of buying another piece of history: ML 26 or one of the 6,7 or 10. In the meantime, I heard about the newest generation of Pass Labs X 2.5, with digital display and remote control. Which of the 2 preamps will sound better in my system: Mark Levinson 27- Legacy Focus speakers-VPT-TNT 3.5-Lyra Lydian-Phonomena phono stage??????
Please advise!
THX so much for your input
Radu