Hi, Gdmendel!
In the mentioned budget will perfectly fit Triangle Zephyr if you want a floorstanding model, or the Titus XS if you like a bookshelf model. Either way you will get speakers that mate perfectly well with tube amps(there are many people who use them with Jolida amps- so it's a safe buy).
Or, perhaps, some other Triangle model...
You might end up with sound that will make many which spended more money to envy you!
They could actually be the biggest bang for the buck!
Best regards,
David.