The ring and pinion is the weak link. Also the style of centersection. You can't fix it.
All housings flex and need to be strengthened, but my point is you'll still kill gearsets in an 8.75 no matter what you do.

The 9" has WAY more aftermarket support, but a Dana is cheaper...if you don't mind limited gear ratio choices and a little extra weight. These 2 each have their place depending on budget and the application.