Neither of them handles cycling very well, but the Garmin does a nice job of tracking my running

It didn't do a very good job at tracking workouts, I played basketball for an hour and didn't even recognized that I had been running

It does a very good job of tracking my steps, monitoring my sleep, and identifying my activities

I was looking for an inexpensive watch to wear for recreational purposes that also had a pedometer and this does that job well

and sh is maybe 5" and small wrists so they have done a great job on covering a wide range of sizes on the regular band

Garmin Customer Service did an excellent job responding to my complaint below

It does a great job of picking up my water aerobics movements.

It does a better job of catching short duration cardio than any of my previous devices

It does a great job of detecting my intensity minutes from my morning treadmill workouts, but I can't say how the other Activity IQ feature works as I don't ride bikes or swim every day.

This tracker does a decent job of calculating my sleep - sometimes I have to manually adjust my sleep time if I've spent time stationary, reading a book before bed

The vivofit 3 does a fine job of measuring the number of steps taken in a day

I use it to track my steps and it does an excellent job of that.

Daughter seems to be using all the features without complaint - so Great job Garmin!

Also, I've been swimming several times and it does a fine job under water

The V3 uses Garmin's "MoveAlert" technology that senses when you're getting after it and does a reasonably good job reflecting the activity.

My Samsung Gear Fit did a much better job at including my swims (even though it didn't specifically track swimming as an activity)

My smart phone app does a much better job.