Tube Integrated vs Tube Seperates

I have had integrated dual mono amps that never sounded as good as my primaluna pre and amp.  I am getting another evo400 to run both in mono.  You will find separates to your liking.

PrimaLuna fine at your budget level. Separates better but you'd have to stretch budget. Actually, I'd rather have the PL integrated with it's active pre vs some of the other tube amps with passive pre's.

I prefer the simplicity and sound of a high quality integrated tube amplifiers like the Audio Hungary Qualiton Series. But they are above your budget even used.

My X200 smokes every PL, AR and Mac separate I have ever owned. 

I had a PL Dialogue Premium integrated, then the preamp and amp separately, and yes the separates were much better - a lot more clarity and detail.  I now have 2 Evo 300 monos that I use a Benchmark LA4 (solid state) preamp with, running Harbeth M30.2 and second Runwell’s comments above regarding Line Magnetic.  If you can audition, depending on what speakers you have, the LM is awesome (I have the 845ia) which is only 22 w/ch.  For classical and jazz I enjoy this integrated more than any of the above.  And it does not have less clarity than the very neutral and detailed LA4 running the PL monos, which to me was amazing.   The PL are very nice though also and you can’t go wrong with them.  The LM is just more realistic sounding and musical, to my ears.  Actually has more ‘snap’ and punch than the PL.

I had a long response but it went poof. So I’ll make this short and sweet. For your budget, buy the best new PL integrated you can afford. However without knowing what loudspeaker you will be driving, my final answer is TBD.