The artist really provided a diverse array of designs for the Philadelphia Eagles, each with their own stand-out aspects of the design. With an eagle, you can either go with the face or the wings. Both are pretty awesome on a helmet. The top right design adds some feather texture throughout the helmet, along with the wings on the side. The texturing might be a little too much though.
The bottom right design is a better version of the wing design. The wings are sleek and simple, without any texture to distract. Ultimately though, I love the eagle face on the helmet. When you have something as cool as an Eagle's face, you might as well use it. It is also pretty cool how the beak is cut off right where the helmet's face opening is placed.