Tube in Preamp or Power amp?

Well a tube preamp is going to need tubes. CHEAP tubes every say five years.. Maybe ony once every ten years..
Tube rolling is a breeze on a tube preamp. My VAC Standard preamp has been running on 24/7 365 for 3 1/2 years and the used tubes that were in it are STILL perfectly fine.

A tube amp.. Is going to need tubes every two years and those tube will cost a bundle of cash. Tube rolling on a tube amp is going to cost you an arm and a leg.
Tube amps get HOT. (My VAC Standard tube preamp in a sealed case.. the case barely gets warm, with 4 tubes in there)

Then safety. A tube preamp is NEVER going to blow up and start a fire.
A tube amp may decide to blow up and start a fire.
Going to the bathroom and coming back to your amp on fire is a scary thing. You can never leave a tube amp unattended when it is on. (heaven forbid you leave the house while it is on) Then biasing. A tube amp will need to have this done on a regular basis.

naturally these are exaggerated, so all those screaming THEY do not think so can line up at the back door.
But generally these comments are true.

So for ease of use and problems a tube preamp is near 100% equal to the ease of use of a solid state preamp. A tube amp is a whole different ballpark

Note NONE of this has to do with sound. Just mechanics of ownership.
Owning a tube preamp is easy and no problem. I own two.
Owning a tube amp is a PITA IMO.

"Going to the bathroom and coming back to your amp on fire...."
Women spend way to much time in the bathroom:) (Just kidding)

Just starting out with tubed components the preamp is easier to deal with.They do have a highish output impedance so make sure your amp's input impedance is a higher value than the pre's output.IMO tubed components allow the music to become more natural and alive.Good luck in your search!

I doubt you will get a definitive answer to your question, but you do need to maintain system synergy.

For a tube amp, the speaker's impedance curve should not have substantial dips below the nominal impedance.

For a tube preamp, proper impedance matching to the SS amp must be observed.

If you are going to try a tube component, just make sure it will work properly with the rest of your system.

They do have a highish output impedance so make sure your amp's input impedance is a higher value than the pre's output.

Just being higher is too vague, as it should be at least 10 times higher at all frequencies.