Besides being the best looking brace out there its also the most rigid. we use a 1.25 inch chromoly  tube which is tig welded to a fully tig welded box on each end.

These boxes use all four bolts on the tower to mount the brace solidly (no heim joints to pivot and let your engine compartment turn into a parallelogram). One look at one of these braces and you will see the design, fit, welds, and finish are second to none.