What mechanical fuel pumps are you guys running?

I currently have a stock replacement on the 318, nothing serious planned for it, but the old pump threaded fitting was pretty rusted up and one of the legs looks like it could become and issue down the road. If I replace it I would like to have a standard style cast bottom vs the stamped steel lower... Figure upgrading the fuel system would be the first step when I build a new engine for this thing anyway, new 3/8 sending unit and 8 an supply line is already done. Something with a return provision would be nice then I would not need a bypass regulator in order to run a return line. Figured I would see what you guys are running before ordering a replacement. Picture is what I currently have.