(Sorry if this has been covered before.) I've always thought of myself as somewhat of a tech-geek, but I don't know much about cyclocomputers.
1. Are they used much on MTB?
2. What will they do for me?
3. What's the price range for a decent one?
4. If I buy wireless, will it interfere with my heart rate monitor?
5. Are they durable enough for MTBing.
6. Do you use one?