In case anyone's interested, I did a quick review of the first OST
here.
The songs I like the most are:
Knives. Man, if there ever was a song that had "adventure" stamped all over it, it's this one. The title is misleading, but the guitar work and percussion is awesome.
Yellow Alert. Crazy, crazy guitar! A racing song for fast-moving traffic.
Sound Life. It's a great song with even greater singing.
Fool's Paradise. Sums up the feel of the entire anime. Some sections don't flow as well as others, but the mood it sets is perfect.
People Everyday. Another "adventure" song that's perfect for an empty highway.
Maybe I judge my music too much on how well it sounds on the road...