One of the biggest issues for me with the Forerunner is the fact that it seems to have a rather laggy heart rate monitor. Looking at my friend heart rate tracking with the watch, shows rather abrupt increases and decreases in the heart rate, most notable at the beginning and end of a run.

Based on the cost of the Forerunner, if the new Pebble Time 2 is as accurate or better, the cost alone might have me buying it. That said I'm on Android so I would get all the benefits unlike the iOS crowd.