This is a little cheesy.
I need to know more about bike computers myself for my soon-to-be purchase of my new bike...
but, at this moment I want to buy a wireless for my bf's bike to show him how proud I am for doing the local MS150, which was his goal when he started biking, that up until recently, we weren't sure he'd be in shape for.
But he is and I'm proud.

So, my question is this. For those of you that know wireless computers, what should I look for?
And for me... what makes the difference with them. And when they say they measure heart rate, how accurate are they, because otherwise I'm going to have to wear a monitor from my cardiologist.

Thanks!