I am looking at upgrading my 15yr old road bike (Shimano 600, Jim Bundy steel frame) and can't decide between 2 models, Trek 2300 and Giant TCR 1. The Giant is abt $700 cheaper and has the same group set but Trek do seem to have a great name in the market. Any advice or options on reliability/quality etc would be really appreciated. BTW I do abt 150km/week on the bike and hope to increase this over the next 6mths. Thanks guys.