The ease of use from beginning until end was very good! I liked that you could see exactly where your time/costs were going in each phase as well as how long it took overall by user defined parameters like hours or days vs weeks etc.. It's easy enough even if my skills are limited so not much has been learned yet but there seems no reason why this should be any different than other software out there? We have used several programs including MS Project which we found difficult at best - nothing really stands up against our current needs here with regards to cost control / management efficiency & reporting capabilities however since implementing ProEngineer all issues related specifically around these topics seem resolved!