How useful do you find the 'new' (as compared to 945) training/health metrics on 955 (or any other garmin watch that supports these). A bit of background , I am a satisfied owner of Garmin 945 (but the screen has started delaminating, will contact Garmin about this). The 945 does all that I need. When purchasing it I was excited about all the training/ health metrics that the watch offered back then. But over time, I have realized that I have not much use for Training status and other metrics that 945 offers. With 955 Garmin developed these further - an on paper at least, these new consolidated metrics look more useful and actionable. But what has been your experience with these? Are they an improvement over 945 or just ... meh...not essential at all.