"Good tube Integrated Amps"

Add another to the very happy with the Rogue Audio Cronus Magnum II list. Great sound, great looking, American Made to boot. 

I have had a few system tryouts and ended with the Primaluna Dialogue Premium with KT-88 and NOS Philips 12AU7 as pre matched with Rotel RCD-1072 driving the ProAc Tablette 2000 Signatures. For the money that I spent on this current system, I could not be happier. What I like of this system is the real natural sound with rich lush midrange and 3-D like soundstage. 

Very happy with a Jolida JD302 CRC I got as a demo for 1/4 of what you're talking about.  Of course I like EL34s and there are so many around to experiment with these days.

Just saw that there is a PrimaLuna Dialogue Premium HP in the sale section here that's in your budget.

Have you considered a hybrid ? My friend is using a  Vincent Audio SSV-237 and it is stellar.
Operates in class A for the first 10 watts , 150wpc -8ohm / 250wpc-4ohm .Sells in Canada 
for around $2500.Many great reviews .