I switched to a Sigma 1609 once a few years back when a friend convinced me that if I wasn't paying attention to my cadence then I was, I dunno, weak, a bad person, a poseur, whatever. I put it on, found out that I already was spinning at pretty much the exact right cadence anyway just because that's what felt right. I sold the comp again after a few weeks.

I use a Planet Bike Protege 9 on one bike, because the temp is kind of neat sometimes. But on my new bike, a decent road bike, I honestly just went to ebay and bought a cheap Chinese bike comp for $6 shipped. It works just fine.

I don't like wireless. I guess if you're going to go wireless you probably have to go with better comps to avoid interference from lights, bluetooth and other such things.

I actually only even have a bike comp because it's a clock that I can see while riding, and I kind of like to keep track of when I've ridden another 1000 miles, and to keep track of maintenance. I never actually look at it when riding (other than the clock sometimes), or even after riding on a consistent basis. I just look at it once every week or two to see if I'm coming up on another 1000 mile point.