@thomas haha found your post looking for Haken fans 😁 Agree with Mountain/Affinity, but actually there are no bad Haken albums. Fauna could actually move up there for me, time will tell. It's different, but it's in a weird way more Haken-y than Vector/Virus.
But actually the best song they ever made is Crystallized. That's real peak Haken and favorite prog epic for me.