I love working with Garmin, their products helped monitoring my body since my first triathlon. And since a year now they have provided me with the most amazing gear that helped me a lot in achieving my goal of qualifying for Hawaii.
I use the Forerunner 935 as my primary guide in training and competition. One the bike, the edge 1030 is my Gps and my view on my power output. And that power output is measured by the amazingly handy Vector 3.