Wow, that sounds really awful. A couple of things jump out. One is your shorts. Tri shorts tend to have a really thin chamois, and PI's tend to have a really stiff chamois. My guess is neither one is helping in your situation, but they can make matters worse. Second thing is that you sound like you're pretty active on your saddle when you ride, you move around a fair amount. So you end up rubbing the front area more, and irritating it more, a vicious cycle. I would suggest less is more up front for you. Your cut-out looks small. There is better out there. Check out the Selle SMP line for h-u-g-e cut-outs. If there's nothing there at all, it can't irritate. Also, Selle San Marco makes something called an Aero Saddle. It has a big cut-out in a diamond shape that might just give your bruised parts clearance. Be sure it is the Aero, and not some other models that use the "arrowhead" cut-out as there is a difference in the front end.

I don't think you gain anything by going to the Butterfly. It is a soft saddle, and if you push on the cut-out you'll see it has a tendency to fold in under pressure & pinch in front. You'd probably be better off with something firmer that has as big a hole as possible but will still keep its shape if you shift around on it.