The Night mix is a thumping, twisted, exotic and exhilarating techno workout that makes you wish you were a) dancing like a lunatic in Cocoon, and b) 21 again. Get through the first couple of tracks where Sven is just mixing by numbers and it's a masterfully blended demonstration of a genius on the turntables working his audience (even though I guess this was just studio recorded).
The Day mix is a half-arsed electronica effort that veers from stripped down nothingness to screechy wierdness with some naff vocals thrown in. It's not worth much except perhaps for poncing around in your Top Shop sunglasses not really paying attention to the music.
I own the last 4 Cocoon 'Sound of' albums and this is easily the best on the basis of the Night mix alone.