This is the "regular" cement, and unless you are doing larger pipe (over 4" schedule 40) this will work great for you.  I actually prefer the medium (with the black label) as it seems a little thicker and can be used up to 6" on all PVC schedules.  Just for reference, the "heavy duty" in the green label is good for PVC with pressure up to 12" but i think people use it because it is thicker still which makes even application somewhat easier.