As a dealer for both for many years I can safely say that they both make solid systems. Depending on the vehicle one brand may be better suited to your needs than another. Cost wise they are similar. Some cars, BMW and Honda for example have Yakima rack inserts in the roof of some models, these work great, super solid and a nice clean look. As a reference, I have a Thule rack on my wife's Volvo and a Yakima on my Jeep. The Truck has a welded ladder rack. Most new components, such as stackers and bike racks, will fit both systems.