I had a pair of Sugoi tights that always cut into my digestion something awful, I was always rolling down the waistband a few inches. The PI thermafleece tights don't do this for some reason. The PI AmFib tights have a nice scoop waistband in the front which is both flattering and comfy.

BTW, I'm always hovering between a Medium and a Large and I always make sure to buy tights in Large and I always try them on over bike shorts.