TJ56 wrote:
I'm an old guy and I love my vivoactive HR. Not sure how the HR differs than the 3 model but the HR model has served me well for all my pool swims, all my runs, and my gravel rides. It won't record open water swims which is fine by me and it doesn't do power/cadence on my tri bike in which case I use my 520. What I really like about the HR is that I wear it as my everyday watch so it's always available to me for activities and it also records steps, HR, and sleep data <- which us old guys need to track too!Another old guy here who likes his Vivoactive HR.
To the OP, if you don't know about the DC Rainmaker website, you should check it out. It has very good, very detailed reviews on sports watches.