The Metaxas & Sins decks are based on the Stellavox SM8, arguably one of the best decks ever produced based on comments I have heard from a few recording engineers. I have the capability with that deck to use the internal electronics for playback, or take the signal direct from the tape head. In my comparison this is the only deck I have heard where the internal electronics stack up well with my tube tape head preamps.
If you're going vintage another consideration is to ensure it's serviceable and to have a good resource available to service it. With all due respect to @larryi the Revox A77 is one to stay away from. Revox makes fine decks but the B77 and PR99 are the ones to seek out. With any vintage deck, just make sure it has 15 ips tape speed, not all do.