I have both and love both. Both have good and bad. Hopefully this will help someone Updated! Apple Watch ++Apple Pay + Looks amazing and incredibly well made + WatchOS 3.1 is brilliant + Vibration is superb + Best smartwatch screen - Battery life (1.5 days is not bad) - No automatic sleep tracking (sleep++ and pillow are the best we have so far) - Health integration is lacking - only works with iPhones - series 0 - 3rd party apps too sluggish and slow Fitbit Blaze ++ It works with iPod Touch and iPad ++ Battery life (4-5 days) + Cheap to buy with a steel band £25 from CEX (£145 for both from CEX - Grade A for both) + Notifications are quite decent considering + Step, flights of stairs, automatic tracking, HR 24/7 (all viewed live on the watch face) + App is great and HR graph makes a lot of sense (compared to the Apple health app) - Vibration sucks! - no apps - no weather on the watch face - no Japanese/Chinese text (yet!) If you want the best smart watch, buy an Apple Watch. If you want the best health/smartwatch buy a Fitbit Blaze.