I believe I have that cateye on my road bike. It's a good one and it was like $30 at performance. Mine is wired though, i got it to run on the rear wheel during the winter for trainer use.
I have a specialized speedzone comp on my mtb. It's wireless and you can get a wired cadence add-on, It's got a really sweet stem mount too. Was like $60 without the cadence add on.
If you want cadence and wireless, check out the new sigma stuff. I can't think of the model, but they have a wireless cadence model.