I have a pair of the straight regulars and hate them. They are baggy and loose. These slim ones fit much more naturally. I wear size 31 and had to get a 32 to fit comfortably. The 30 was way to tight and the 32 I can wear without a belt if I wanted to but usually wear a belt anyways. Good durability and they are very stiff when you firs get them but usually soften up within one or two washes.