Pants recommendations for bigger guys?

I'm 30, 5'10"/5'11", about 260lbs and have been struggling most of my adult life to find some jeans, casual pants (khaki/chinos), and dress pants that fit well. I currently experiment with either 42 or 44 waist but I always seem to have an issue where the front of my pants tend to bulge around the front of my waist/crotch area. It is most apparent when I start to walk or sometimes with dress pants in a seated position. I've tried slim fits in the past but from a comfort perspective, they're not the best. Typically, I have to go towards athletic or relaxed fits. Any recommendations on what I can do for a better fit? It's starting to feel like buying big and getting the pants altered is my only other option.