I have a Sigma 1609 on one of my road bikes, with an second mount for it on a touring bike, but the rest I don't use one. On the road bike I use a computer I have a cadence set up on that one, on the touring I don't care about cadence. But it's nice information to have to see how far I've gone, average trip speed, keeping my cadence in check, outside temperature which is great for touring. But the other bikes I have, I don't bother. I don't keep track of the data on a computer I just keep it in my head. Maintenance? My computer doesn't help me do that, any dope can tell when to maintenance on a bike without a computer.

I do like the wired computer better then the wireless. I had 3 wireless computers in 8 years, their just not reliable, and the sending unit ate batteries, but the button bats are cheap so that wasn't a big deal, the big deal was the sending units kept failing. So I went back to wire, so far the Sigma has been great.