I'm trying to decide between the Fenix 6 titanium or the fr 945. I think the case is about the same size but I know the Fenix is heavier. Do you find the Fenix 6 to be ok for weight training type workouts ?
I'm looking at the same thing ...
The forerunner 945 47mm case + strap = 50g
Fenix 6 Ti 47mm case-only = 49g
however with some math, the straps look to be about 25-30g, be they rubber or Titanium so ...
* Forerunner 945 47mm case = 49g
* Ti Fenix 6 47mm sapphire rubber strap = 72g (same screen size as forerunner)
* Ti Fenix 6 51mm non-sapphire rubber strap = 82g
So, the Fenix 6 Ti is
at least 44% heavier than the 945, and that's a lot, so I'd say it depends on the type of weight training you do; if you're lifting heavy mostly then the F6 is fine. If you're doing explosive training and/or crossfit type of stuff, you'll want the 945 ... however I'd say in the latter case you're going to want a chest strap either way (or an arm strap like the Polar OH, Scosche Rhythm 24, or Wahoo Tickr; I prefer the Polar and I like the Polar Flow app).
EDIT: the Garmin Instinct is only $200, has most features, and is 52g -- easily the best value fitness watch