Nice clean lines, good presentation. I can tell a lot of hours went into making that happen. Only constructive criticism i'd offer is minimal, as others said, those 90 degree angles may look cool but they kill flow rate. however, if your temps are good then who cares. on a non constructive criticism note: it looks like you're using pee, no offense, i get the gold idea but it looks like a WC loop full of pee at first.