Which Controller has the smallest Board

[hidiosoman]

I'm about to buy a 3rd party controller for use in my portable and I am wondering which controller has the smallest board or is the easiest to trim down.

Also, can I just lop off that top part for the memory and rumble pak without much rewiring? Because I'm not gonna use any accessories with it.

EDIT: I don't want Hori Mini Pads.

 

[bud]

Retrobit