For my PS2, I've gotten a couple of controllers from GameStop. They sell the
Afterglow, which has one totally cool innovation, and one annoying but ignorable one.
It features "step-down" L2 and R2 buttons. Basically, they're underneath the controller, exactly where your middle fingers are when holding it. Sort of like the trigger on a joystick.
So now, I can hit all four shoulder buttons in any combination easily.
Annoying feature? Clear plastic, with bright LEDs inside. I had to put little bits of electrical tape on a couple of the LEDs that were shining right in my eyes.
This is the only controller from Pelican I actually like.
I can't find a pic that shows the stepdown buttons, but trust me, they kick butt.