Hi there
Sometimes wedgies are caused because your underwear is too small, so you could try a larger size. I wear Bonds, a lot! I find them very comfortable. But no matter what brand you buy, if you don't buy a style that's suited/comfortable for you, you may still get wedgies or feel uncomfortable. You should try the boy-leg style, as it is styled to sit underneath your bum and not in it. If worst comes to worst you could just buy a g-string...they're meant to give you a wedgie