i’ve been down this road and back up again and after having a fitbit charge which i took back, a Withings Swiss watch which i sent back I settled on a fitbit Blaze.
What you have to consider is how you want the watch to work. I have a garmin on my bike wth HRM so that’s covered but I wanted something to measure my heart rate on spin classes and HIIT workouts.
When you know what you want to measure then it dictates which product.
Gamins are good with GPS, so great for running/cycling etc etc but not so good for indoor stuff like elliptical and workouts, unless you wear a heart rate strap or buy premium models.
I went for the Fitbit Blaze as it measures heart rate and has a series of predetermined exercise modes so if i’m doing spin it works on heart rate only, if i’m running it can either link up to phone for GPS or count steps. I did a 3k run last night on steps only and the person I was running with did it with Garmin Forerunner on GPS and i was amazed that the distance on my run was exactly the same, really shocked me.
The blaze I think is the best around for £160 and looks nice and has a lot of nice feature and the sleep monitoring is interesting too. it has Fit star on it which links with iPad/smartphone and it’ll give you a series of fast workouts to do high intensity stuff, which I find really good.