Importance of Amplifier versus Preamp?

Pre-amps are far more important, can make a so-so amp sound
good, best amp in the world will only sound as good as the signal from pre-amp.

I like to have a great amplifier with a good preamplifier with same brand and generation.
The most important to remember that the goal is to increase your enjoyment of music. To me, I'm listening through a component that is going to make me happy, relaxing, and just settling into the music not the equipment.

IMHO, the preamp is more important, BUT the amplifier/speaker interface is more critical. Once you get the amp and speaker match correct, a fantastic preamp will make it even better.