analog to digital

I have two systems, both of which run off my iMac (through Perpetual Technologies DAC, BAT preamp and Odyssey amp in one room and wirelessly with Apple TV, Cullen modified PS Audio DAC and BAT integrated in the other room). Snell Type A and Type IIIA speakers. I like the convenience of it, but also have an ESL-1 turntable with TT copper mat and ring and clamp that I continue to buy records for. I would like to be able to transfer music from my record collection to the iMac and keep as much as possible of the vinyl quality (I know it won't be the same, but I still want the music in the second system). There is an old (2006) thread on this, but I wondered what is the current best buy in analog to digital converters which would allow me to transfer the music from the turntable to the iMac and then wirelessly to the Apple TV, DAC, BAT, etc. Any suggestions?