Thanks for the first very insightful post. Regardless of the stock components, what would be the hierarchy of the given Giant frames? And are they all XC?Geometry - which is to say angles - tend to be "basically" the same on many of the similar frames, but things like chain stay length are a little different. Also, take the Revel (low end), Talon (mid level) and XTC (top end) and there's likely some weight difference in the frames even though they basically seem the same. Add to that fact that the components available on each when purchased as a complete bike reflect the levels I indicated, and there's a huge difference.