Favorite pair of sweatpants?

So I know this is kind of weird, but where can I buy really comfy sweatpants? I know you can find sweatpants at pretty much any store, but a lot of them aren't what I'm looking for. They're either too straight-legged or too flared. I like the ones that cinch in at the ankle and are kind of baggy, but you can roll up. Or ones that don't cinch in but aren't too flared. Does anyone have a favorite pair, and if so, where are they from?