I hacked my xBox controller with sugru and made it so much better to use - the repositioned buttons are tact switches. On the front right of the xBox controller there are 4 buttons, Y, X, B, A.

I moved these buttons to a much more comfortable spot, and now the bottom left side controls the Y and X and the right side controls B and A. It truly is more comfortable plus I don't have to take my thumb off the right "thumb stick" to hit the buttons the old fashion way, thus giving me way more control. Brian