Caliber cast trucks have a heavy duty hanger made for stability when riding. The 44-degree 10" Caliber cast trucks have a steep angled baseplate making for optimal stability at high speeds. They might feel stiffer than say Randals or Paris trucks but they turn like a dream, especially at higher speeds. The 50-degree Cailber cast trucks are more for freeriding than their sister 44-degree trucks. Even though they have less of an angle on the baseplate, reviews show that they do almost as well at high speeds. They also have a narrower hanger making for easier carving and flow. So what it comes down to is whether you are more into downhill riding or freeriding/carving. Downhilling enthusiasts get the 44-degree Calibers, freeriders go for the 50-degree Calibers.