I just bought gsxr, and well, want to show my love for it off.  I would DEFINITELY recommend getting a size larger than you normally wear, as this one shrunk up a good bit.  I typically wear a large, but decided to buy an xl, and it has shrunk to a typical large size after 2 washes.  The lettering hasn't faded, still looks bright.  It does get a little warm in the heat, but that's because it's black.