In the past I had mated the Unison Research Unico with the Jolida JD-100, wonderful match! Especially when I retubed both units with Mullard NOS military (CV4003 & CV4004) tubes. Very complimentary! Well worth looking into. If I ever build a second (less full blown) again, they would most likely be at the top of the list.
Good luck!
Good luck!