I have a Cateye on my Giant Trance X2. I like it - it's reliable (despite it being wireless), seems to be waterproof, is auto-on, and also has a backlight. However, it's a little irritating that it won't pick up any speed under about 3 mph. I know this may sound like a nit-pick, and it may be, but when I'm grinding up a hill working my backside off for that little thing to tell me I'm not even moving - well it's irritating at best. Other than that, it's great.