I've only owned one tube amplifier (PrimaLuna) so my tube amplifier experience is very limited. I have generally settled though on SS amps I thought offered some of the tube like qualities I enjoyed.
The amps I've owned that I associate closest to my limited tube listening are: Classe CA300, Modwright KWA 100SE, Pass XA30.8, AtmaSphere Class D Monos, and Coda S5.5. Personally I think the AtmaSphere monos are the closest to the tube sound I remember (not counting the super black background and very tight bass they also provide... :)).