@jjgasp : I would keep the ZENith MK3 as is, and upgrade the DAC. Yes, Mola Mola Tambaqui is a great DAC. In case you want to spend less, and since you like BP DAC, you will love Holo Audio Spring May DAC. It does not have a streamer built in, but you can "feed" it via USB from your ZENith.
Another less expensive (than Tambaqui) is Cary DMS-700. It has a streamer built in
Another less expensive (than Tambaqui) is Cary DMS-700. It has a streamer built in