If you need the full round head because of the code for your area then you have no choice. However, for the rest of us not in California the paper nailer is nice. I like paper because I feel safer with it. That is high when you only need 70-80PSI for smaller nails. Well, I settled on the Hitachi and there is no comparison in quality when viewed side by sidel.
Japanese quality is obvious.
It also fires the same nail at 90 PSI in terms of depth compared to the Paslode needing 110PSI to achieve the same power. It has absolutely no recoil whereas you can feel it at 110PSI after a while with the Paslode gun. Hitachi has a superior depth adjustment, and doesn't need a allen key to change the exhaust direction. Also Hitachi much quieter. Because the Hitachi stores its power on the exhaust side, they say water is eliminated effectively from the gun with each shot, therefore offering longer life.