I had wired mity8 to start with. Now I have a mavic (non cadence) wireless, and a vdo wireless. The mavic is easier to read, the vdo does altitude, feet climbed, and gradient. I could get the mavic version that does all of that, but i got these two at a steal of a price off craigslist, so I just have two computers on my bike. The only problem I'v e noticed is that the readout flips the **** out if i go near remote controlled gates, but quickly settles down after i pass. never had a problem with my front light interfering with the function of either computer. you do need to make sure the wake them up if you have been stopped for some time, or you miss some distance recorded.