He's looking for the best tube amp, I doubt an amp under (non-DIY) $1000 qualifies
This is nothing but Headfi all over again if you're going to ignore the original poster's request. I could have recommended my SHA-1 (only tube amp I've owned), but it is far from one of the best tube (even better) tube amps available.
If you have no plane of reference for the real high end why bother?