Hi guys, just giving my input on the watch. I owned the original series "0" space grey sport watch last year in NOVEMEBER. I returned it because it was pretty slow.. I decided to give a chance to series 1. Why did I pick series 1? I mainly carry my phone with me at all times, the GPS feature probably wouldn't have been that useful too me due to this.. I also don't go running :/. I should though but, I know I'll have my phone on hand. I take off my watch whenever I shower because I remove my glasses also. I also don't plan on swimming with my watch. It has the same processor as the S2 it is SO MUCH better than series "0" which ultimately made me return that one.. I use the watch at the gym using "other while lifting weights and works really well. I'm sure both share the same heart rate sensors. My only :S about it is the fact wish they would've supplied the brighter screen to series 1. Now it's the time to get a Apple Watch for sure. Anyone else choose the series 1 or 2?