I confess that I am a vacuum tube nut.
I have an all tube stereo system, including a universal player (SACD, DVD, CD, MP3) that has been modded to sport a vacuum tubed output section.
I used to be into vintage tube gear, and tubes but now I'm into modern gear that seems to have the benefits of sonic features of solid state and tube. I just can't do without tubes. I do use cryo'd tubes. . . I have NOS cryo'd in my source, and cryo'd current tubes in my other components. And yes, I think they make a difference (I've not had noncro'd tubes of the same make and model as the NOS, but have of the current tubes, and prefer the cryo'd versions.)