TheExodu5 said:Left hand thumbs or right hand thumbs?
If right hand...then the PS2 or PS3 controller are great. Probably the best buttons out of any controller. If left hand, then I'd probably go with something like the Classic Controller Pro.
Speaking of which, I need to figure out how to get third party controllers working with the game. I really want to get my Super Famicom CC working with SMB.
I use this and it works great
http://www.play-asia.com/paOS-13-71-6m-49-en-70-3nu3.html
Haven't tried SMB with it, but it works for emulators and Recettear.