Help!!! I need a better amp for Scansonic MB1 !!!!!

Please help! I need a good amp for my Scansonic MB1 speakers. I have a 1981 RGR amp/preamp system, but want to update. Anyone have any hints? Was thinking Musical Fidelity m3i. Thanks!
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I've heard Scansonics driven by Naim several times. Very musical. XS-2 or SN2.
Thanks will check Naim out.