I have the Apple Watch Series 1, it's time to upgrade. What does everyone recommend? My budget is $250 including taxes. I can get an Apple 3 (the one with GPS), for $250. I like my Apple watch but I'm not sure it's the best for training. I also don't mind buying a refurbished watch. I have a new DoppyBadger training plan and need something more that I Apple offers. or are there Apps that will work with an Apple watch?