I agree with others who say set your sights higher. Get something that IS NOT as well known. You'll discover that they are usually as good and very often better than the well known brands.

Be flexible. Wait to see what comes around.

And you're better off buying a complete bike or at least a semi-complete bike. Building a bike from the ground up is stupidly expensive.

If I had to choose between the two, it would be the Colnago, because I'll bet the Schwinn is heavier than its equivalents in other brands.