I don't consider my 43 year old tube amps vintage, but they are old. They are quieter (dead silent on 97 dB speakers), clearer, more neutral, and faster any other tube gear I've owned except a new version from the same company that retails for 9X more. Sent them in to the manufacturer for a checkup. Nothing wrong with them / out of spec. They just happen to be a great sounding very robust design in my opinion. That doesn't mean that I think all early 80's tube amps are terrific and I will use them exclusively. I like to have a variety of amp flavors, not related to their born on date.
I don't have these particular amps for nostalgia and warmth. Like their sound, their looks don't color my system. I listen to them every day because they sound great. There is more nuance than all vintage gear sounds warm, more forgiving of the bad recordings of it's era, is of inferior design, highly unreliable, and all new gear is quieter, clearer, less distorted, more reliable, superior quality and design.
I look for certain attributes in my gear and work towards the best value, which is never brand new. I used to think I wanted the best gear. Now I look for gear that compromises the least in order of my attribute priorities.
Whether newer or older, I prefer point to point wiring whenever possible for long term serviceability and sound quality in analog devices. PCB's are designed to be throwaway, which is fine until you can't get the board anymore. Newer or older I'm always thinking who will service, do I have to ship, what their hourly rate is, what is their reputation. I will not buy certain popular brands based on high repair costs or poor service reputation alone. I had the only US authorized dealer refuse to service an amp because it was out of warranty and vintage, which for them was anything over 10 years old! Because it was point to point wired though I was able to take to local shop and repair with no issues.