Diesis - too much money for the performance on offer, but they are very nicely made. I heard them with an Ongaku at Munich but they were better with the other amp there.
Animas will work only with quite specific genres but when working well they are good. With the wrong amps and material they can sound dreadful. 211 based amps are generally quite dynamic and lively but can be a bit brash in the top end. Not sure that'd be a great match with Anima. Good with Aries Cerat at Munich 2011. Best I have ever heard them sound.
Universum will work with a broader material range than Anima I think. Good speakers these days, though I didn't like the first version at all. Have heard them with 211 amps and they were good.
For horns $35K Duo Mezzo XD is what I'd go for. IMHO they are better than all the above even though all the above are good. They have been in the game for a long time and it shows.
With the 211 that we heard it was under powere. The big amp was more like it's I wanted to listen to those 211 for the 211 tube shootout. And yes your Amperex 211 tubes still remain one of the best finds of the hobby. Possibly WE 242C can outdo them