The Ravenna 10 has an overall tamer look than the Caldera 3, but it comes in three different color combinations, so runners have a little more variety in terms of aesthetics. The shoe serves a much different purpose from the Caldera 3 as well. It's a road running shoe that doesn't really have the structural elements needed to go off road. But this model really shines in its supportive features. Brooks' GuideRails holistic support system is the main attraction here, positioning your feet in a way that also takes stress off your knees as you run. Despite its focus on stability, the shoe only weighs 9.4 ounces. It has a midsole drop of 10mm.