These are an awesome pair of shorts. I am 5-11 150 and ordered a medium. They use a much different form of grippers in the legs, and while they do ride up a little during the ride it's nothing major. The strap length in consistent with other brands and shorts I have worn.
These shorts are much tighter than others I have worn and are definitely a compression type fit. If you like a thicker pad these may not be for you, but I find them very comfortable.
Full disclaimer: I bought these shorts on sale for 75-80 dollars. I would never pay the full asking price for them, or any other 250+ dollar shorts for that matter.