My favourite album is "The Tree Suns of Vinea". It seems to me a "hard science-fiction" story and I love SF books. I like the preliminars to travel to another Galaxy, the travel itself, the exploration of Vinea and the technological enviroment and the Artificial Intelligence they found on the planet.

I like Time Travels stories too. "L'Astrologue de Bruges" is good but I preffer "The Time Spiral": this is one of my favourites. I like the travel back in time to WWII, the meeting with Yoko's uncle and "the monster", kind of Lovecraft's Cthulhu, I think.

In the other hand, perhaps "The Devil's Organ" is my favourite among the "not vinean / not time-travel" adventures. I love the mistery in this story and the giant organ.