Need opinion: Cary SLI-80 F1 Sig. vs Dialogue 2

Hi guys,
I noticed Cary updated their SLI-80 to an F-1 Signature version. Anyone with any experience as to how it compares to previous editions ? Also, since I used to own and i'm familiar with, anyone with any experience with the PrimaLuna Dialogue 2 and how these two Integrated compare to each other ?