I have had good luck with Pearl Izumi Quest shorts. The pad is wide so you don't have to worry about the edge of it resting on your sit bones. The xl fits up to a 42" waist. The problem I have with bibs is I can't find any that fit. I have a 40" waist and a 56" chest and a long torso, so the suspender straps tend to dig into my trapezoid muscles like an ill fitting backpack.
If you have a longer than average torso be sure to try them on or see that they are returnable.
http://shop.pearlizumi.com/product.p...471704&outlet=