Gary,
sorry for the slight hijack, but there is some good info here
great to see how other people set up there button layouts
Ginsu,
thanks, I think I'm going to go with neo geo for most 4 button games except fighters. For those aren't 1,2 on the top row and 3,4 on the bottom
again for me it's more comfortable to have the buttons further away from the joystick so that's why I have them shifted to the right
bkenobi,
mine is arched too, the 5 button SF layout works very well