Tube in Preamp or Power amp?

Yes, an impossible question to ask without knowing what your speakers are. And an idea of your budget would help too. Tube watts are not cheap, a real concern with a hard to drive speaker.

But yes, it seems that consensus is that a tube amp tends to get you a greater amount of the tube sound.

And Zd542 is correct that many tube amps and preamps may sound very different from one another. However, there are some descriptors that you can look for in reviews that might help. Mainly, be on the look out for references to a "classic" vs "modern" tube sound. "Classic" sound may be more tubey, but often there are trade-offs with speed, and extensions at the ends of the frequency extremes (good transformers are key for a tube amp, for frequency extension among other reasons). "Modern" sound is usually describing a faster sound, often with less roll off at extreme frequencies. But you also get less tube bloom.

Most important if at all possible is to audition. In your own system preferably.

Bo,

I really think you need to post a dealer disclaimer at the bottom of your posts. This is an important point of information.

And I agree with Wolf and Charles (both long respected contributors here). Again, the classic vs modern tube sound distinction is useful here. And any overly broad generalization should be taken with a grain of salt.

In addition to this modern vs classic sound, for amps we have a number of designs that each have their own characteristics: SET, push-pull, OTL. And then there are characteristics of certain tube types, and then there are different designs and manufacturers of a given tube type.