So I currently own a Garmin Forerunner 235 since about 4 years and I'm looking to buy a new watch. Reasons for buying a new watch are: the battery life is declining the connectivity via Bluetooth to update Garmin Connect with this watch is slow or impossible heart rate monitor is often incorrect GPS signal takes a long time to be found Edward over 4 years ago +1. I have both 735XT and 945. And I prefer a 735XT over 945 because of the GPS accuracy and lightweight. The 945 excel in battery life, which I used it for some race over 10 hours e.g. 100km trail. It also…. Steep learning curve. The $349.99 Garmin Forerunner 245 Music is an excellent fitness tracker for runners looking to improve their performance. The successor to the Forerunner 235, it comes with a m1sqTOS.