If you're keeping the Mac, then you don't need a full function preamplifier (like the Aesthetix Janus), so that's a beginning. Of the phono only units mentioned, I'd vote for K&K (which can be purchased pre-assembled for not much extra), Herron, or you could consider the Aesthetix Rhea. More or less, they are all in the same price range. On the other hand, the Liberty B2B is said to be a "bargain" for much less money. Pity, the industry seems to be struggling, yet there is a lot of good product out there.