Hi . I'm thinking of buying a FR745, so I have a couple of questions ? What is meant when in Dc Rainmaker (8 Months Later Review Update) it is said that the FR945 has Temperature and the FR745 does not ? And is the Garmin ELEVATE optical HR sensor V4 worth not buying the FR745 that has the V3 ? Generally what is the opinion about FR745 ? Is maybe the Fenix 6S Pro a better buy ? I have a good offer for him too, FR745 300 Euro, Fenix 6S Pro 350 Euro, both new. I plan to use it for two to three years, before the replacement.