Yeah pretty much any high end Japanese tuner from the late '70's to early '80's will be very good. These still represent the state of the art.
Tandberg and Revox very good as well.

As an aside, Valves in tuners make no difference to sound... unless there is a valve audio output stage of course. The radio frequency signal is first converted to an intermediate frequency (usually 10.7MHz but 12.5MHz in Troughline) and only becomes audio at the very last stage of the tuner, the discriminator/detector, which in vintage tuners is usually passive. A Foster-Seeley discriminator is used in the Troughline and many other valve era tuners, the other common circuit being the Ratio Detector (a circuit called a quadrature discriminator is used nowadays). In some cases, including the Leak, an audio output is taken directly from the discriminator to the multiplex output socket and so there is no valve in the audio signal path