FYI, the new GPS cycling/triathlon watches also do activity and sleep tracking. They're a lot more expensive than a Fitbit, though; hopefully the Surge will add some pressure to the market and bring other GPS watch prices down.

The company I work for bought everybody a Fitbit (One) a couple years ago, and every summer each person who walks 12,500 steps a day gets a bonus. It brings our health insurance premiums down. The first year we did this, I got really competitive about it. It took a couple hours a day, and I rode the bike less as a result. Over the course of the summer I actually gained a few pounds, because cycling is better exercise and I spent less time doing it.

Fitbit Charge HR is probably the best bet for you. It'll find your resting heart rate automatically every morning, and chart it over time, which is really nice. The "stairs" feature is useful, too, it'll credit you for walking up hill, adds some context to the steps.

You might want to look into the Garmin Vivoactive too. It's a GPS watch with a cycling mode, activity and sleep tracking, and some other useful stuff. Not the most attractive thing in the world but it's worth having a look at.