I love how easy it is for me as an employee, or even my manager if i'm not available at all times of day/night! The interface makes everything really simple & clear!! Everything that can be done with this software has been thought about before hand so there are no issues here :) It's very user friendly too - we have had zero problems since our implementation date back 2 years ago (which was also great).
If they could add more features like time off tracking etc then yes definitely use them over any other system out their because its just way better than anything else ive used previously.