360 without hesitation. Samsung shot themselves in the foot badly. They have a design which will only appeal to a few. They eschewed Android in favor of Tizen. They are only letting their devices work with a select group of Samsung phones. I'm not really sure why Samsung is making such terrible short sighted decisions, especially with their advantage of hindsight in seeing how the gear 1 failed. It's almost as if they are sabotaging themselves.
360 on the other hand has all pluses. It's design is beautiful and should appeal to many many more consumers. They are using Android. It will work with any 4.2 and up Android device. Also you can't forget about how innovative motorola has been in terms of UI and input, look at the MotoX. I have no doubt they will bring that innovation to the 360, making it a very powerful platform.