Hi
I haven't heard the setup, but i know that the dealer i bought my Naims from used to demo naim with Sonus Faber. The dealer that stocks the Sonus Faber now also recommended them for my Naim. Also, i belong to the Naim sect now since i heard the Supernait 2 last year, so i strongly recommend, provided you can stretch your budget a bit (and believe me, it's worth it), auditioning a Naim Nait 5si.
But before that, you should specify what type of music you listen to, the sources you'll be using, etc etc.
And, best advice i ever got on these forums is to make a shortlist, then audition everything on it. Your ears are better then any review or graph of whatever. You might even like something that ppl consider **** - and if you like it, you should go for that! 😛
goodluck!
EDIT: Naim Nait 5si not i.