Not sure if anyone in this forum has the same dilemma I am currently going through, I currently have the series 2 42mm stainless steel and I love to get the new series 3 BUT when I break it down all I am getting is LTE (I use wifi calling everywhere), sensor with Barometric altimeter, Siri talks and a faster processor (my S2 is fast)...will stick with my Series 2.....I did order series 3 from bestbuy then cancelled order.