It's a good thing having your computer on your handlebars, best place to look at it. They easily unclip from their mounting bracket so you can take it with you. I bought my wife the Micro wireless and it's great.

As for heartrate, get yourself a separate heartrate monitor that is on a wristband. You can then use that when running or at the gym. They aren't very expensive.

You might check out the Training and Nutrition forum. There is a lot of information you may find useful.