I'm a huge fan of the standard training shorts and for runs I always pair them with compression shorts. So when I saw the React shorts I had to give them a try. Straight away, I gotta say I like these shorts. But, there are issues for me. First, I'm not a body builder. I'm more of an endurance athlete who does body building style gym work 3 to 4 times a week so these issues might not be a problem for others. The compression short is a bit loose to actually have your phone in during runs or explosive movements. My quads aren't big by any means but they aren't small, around 25 inches and I bought the large shorts. The other issue is that the pockets actually hang below the outer short if you have anything in them. But honestly, I like these shorts and will use them as my gym work short and use the other shorts for runs.