Ummm.. I have several sets of Tektro road brakes, as well as several Campy and Shimano sets. Given that dual-pivot road brakes are very simple machines that pretty much have the same geometry regardless of the maker and model, I don't know what you're going to gain here. The high-end brakes are certainly lighter, and are generally set up better, but the differences are very small. Actually, because the high-end brakes are very much designed for low weight, I think that they are somewhat more flexy than the cheap models.

Some of the best brakes I've ever used are the Shimano RX100 and RSX models from about 20 years ago. Cheap and beefy.

One key benefit of the higher-end brakes are that they are cold-forged, and so are stronger. The low-end stuff is CNC machined, a sign of a small poor-boy manufacturer.

More advice: alu parts should be clear-anodized (silver) so it makes it easier to check for defects. The cheap stuff is colored in an attempt to add some bling to an inferior product. The really cheap stuff is painted.