TCR Advanced 0 frameset is identical to the TCR Advanced 3 frameset. That's how Giant's line of bikes work - they have different component subsets per frameset.

I recommend the TCR, and not just because I sell them, but because Giant also makes the Trek, so they had to have some of their ingenuity in there somewhere - the manufacturing is top notch, the quality is probably the best in the industry, and the ride is amazing.