I am wondering if the days of the Forerunner are over. Is anyone using a Samsung Gear (or other smart watch) instead? Do you have apps that let you do intervals, tempos and use pre-defined routes (e.g., displays current pace, avg pace, lap avg pace, etc.)? Are the millage & HR estimates as good as Garmin's? My Garmin tends to over-estimate distance by 2-4%. Are the numbers as large and clear? What's your take?