I'd add that it matters which model you get - the HR and the Surge are the only ones worth looking at IMHO, as they monitor heart rate while the others don't.

I'd add that it matters which model you get - the HR and the Surge are the only ones worth looking at IMHO, as they monitor heart rate while the others don't. Seeing the data from my workouts and activity, even if not 100% accurate, helps me quantify the work I put in and the results I get. Removing some of the abstraction and seeing the numbers makes the hard work more rewarding.