On my musky gear I throw 80# Cortland Spectron, it's a tinge thicker than the average 80# diameter that is on the market these days but a great braid none the less. I have never lost a bait to a snap off throwing double cowgirls, bulldogs are big suicks. I always use a leader with musky gear though, so maybe that is the reason?
I'm using 65lb PP on my bass swimbait set up and most likely will use a leader to start only because I fish pike infested waters. Can't afford a bite off on some of these baits. 65# PP braid is 16lb mono equiv. I have 12" 100# fluoro leaders im going to use initially, however if it destroys the action on my swimbaits I might just tie direct. I'll be taking a gamble on that, but hey it's the price to pay when swimbaiting.
With braid above 50# you really shouldn't have any issues with digging in. If you are, you spooled way too tight and your drag is extremely tight causing it to dig. A hang up that you try to pull out could get you dug in some but nothing you can't undo. I've thrown 15# and 20# on conventional bass fishing with baitcasters. It's not the most ideal, but you can do it. Rarely do I ever have a birdsnest that I can't undo on braid. I've had more problems undoing a mono or fluoro birdsnest than braid.
I am not opposed to throwing fluorocarbon, but I am just used to using braid. So hooksets and casting isn't an issue to me. I also use braid because eurasian milfoil is so common in the waters I fish, it does a better job cutting through the thick junk.
I think a majority of snap offs are from guys trying to hercules 100yd casts with giant baits. It doesn't take much to throw a big bait far. A little finesse, tuned reel, and the proper load up on the rod will do the trick.
My $.02