Pan gasket for 360. What one works best?

I just went through the same thing with my 408. I had used the rear main from the Fel-Pro gasket set and it leaked. Replaced the pan gasket twice, It still leaked. I ended up usng a new and different rear main (P/N 4798216AC) and now no more leak. Could not find any issues with the old seal, it just leaked. I'm also using like said above a Kevco pan with Magnum gasket.