Well, German magazine Xound has an interview with the acclaimed producer (in German) but here's the Google translation to English (which in my opinion is not that awkward).
Here's the golden bit:
Which roughly translates to:
Das Herzstück des Alchimisten ist ein Apple, da ich alter Logic-Fan bin – ich kenne Gerhard Lengeling* schon seit er noch für den Commodore C 64 programmiert hat – aber man kann genauso einen PC verwenden. Ich habe von Logic 7 auf Version 8 geupdated. Ohne Logic 8 hätte das Album sechs Monate länger gedauert.
"The heart of the alchemists is an Apple, because I'm an Apple fan - I know Gerhard Lengeling since the time he was programming for the Commodore C 64 - Otherwise you can just use a PC. I had Logic 7 updated to version 8. Without Logic 8 the album would have taken 6 months longer."
When I read about people complaining about why they can't do anything with their current DAW I love to see people who complete major projects with the same software; it brings back the fact that the human factor is THE factor to consider in the equation.
* Lengeling is one of the founding members of Emagic, the company that gave us Logic.