I've got a few cheap wired ones from the local Big Box store, as well as two CatEye Velos. Can't say any one really works any better or less than the others. All are fairly accurate (generally <1% deviation from GPS), all work great for basic speed/time/distance. Both my CatEyes are one button, the others are two.
Originally Posted by
blacknbluebikes
Sigma just bummed me out because the spoke magnet broke and went I went to get a fix, I was somewhat irked that it was going to be what I considered "fairly expensive" for a trivial plastic part plus shipping.
Dunno about shipping because I have them locally, but Performance sells replacement Cateye magnets for like $4. They should work on any model, I'm using one with my Bell computer right now. It replaced the giant magnet I duct taped to the spoke to make the computer work in its place....
EDIT: oops, just read backlit. Can't help after all.