I have just heard the Kef LS50s and PMC DB1s Gold, with Musical Fidelity M3i and Audiolab 8200. First up were PMCs and i did not like them at all, sounded clean, cold, thin, lacking in sparkle but had bass, next up were the Kefs these were much better more integrated, warmer mid range. Now the PMCs maybe a better match with Naim I don't know. I would say both need decent amps and quite a bit of power, the MF at 76 W seemed OK but bass was a bit loose at times on the KEFs. For "the closest to studio sound" I would try to hear some active speakers.