If it's a street/strip tubbed car go with a diagonal. If you're really concerned about bending it, pick one up at a 4x4 shop. They'll have HUGE ones that will more than handle any cornering you could do in a tubbed car.
The watts link is a trick set up, but extreme over kill for most of us. It's more of a chip foose pro-touring thing if you ask me.
The wish bone type of set up keeps the rear end planted straight, but leaves little room for exhaust.
Panhard bar is preferred for the street cars from what I've read. I decided against this one for lack of space. Once you sandwich a dana60 between the frame rails, placing a bar on top of the rear end won't look like much fun.
Watts Link:
