I've been running Flex bars for years. I'm 6' tall but have really long 'ape' arms. I run the 10 degree enduro bend (normal height, not tall) bars and am really happy with them. I would definitely recommend the 10 degree enduro bend as it is really straight and let's you get farther forward. Height is a personal thing, but if you run a SUB mount, then I would be leary about getting the tall bend.