I’ve replaced all my original Xbox 360 wireless controllers with the new silver model with the transforming d-pad. Although still far from perfect, the d-pad on these is a major improvement, and worth the upgrade now that the price on these has dropped. It’s also looking like all future controllers released by Microsoft will use the new d-pad design, such as the Gears of War 3 special release controllers.
1. The grayscale buttons. Many games use the color codings, so it was stupid to make them all grey. Fortunately they can be swapped out for the colored buttons from an original controller.
2. The analog thumbsticks still have concave tops (rather than convex, as PS2/PS3 use). Fortunately they can be swapped out for aftermarket PS2-style sticks from online sellers such as http://www.evilcontrollers.com/