Nagra 300i integrated, would love to hear your opinions.

Am in the market for a tube integrated for my Devore O/96 (under 10K used), that will keep me happy for a long time.
Would love to hear from someone who has heard this integrated on their opinions. 
I mostly listen to digital (AMR DP-777) and this will be replacing my Coincident Frankensteins 300b Mk II, since I wish to downgrade to an integrated.
Would be very interested to hear if the Nagra would be a step up from the Franks.