Your choice of a high end phono preamp depends on the type of cartridge you have, specifically the output. If you have one of the lower output MC cartridges, ie below .5mv, I would consider the Paradox Signature Phono 70.
See Michael Fremer's review of this $3000 phono preamp. Fremer's analog front end system is extraordinarily expensive. If something sounds really good on his system you can pretty much bet it is a contender.
I have this phono preamp in my system and it is an extraordinarily good match with my low output Ortofon A95 cartridge.
Good luck with your search.

