I think I will wait to check them out in store before deciding which one I want. I currently have a pebble and love it, but these blow the pebble away.
I am using an iphone 5s as my main phone right now, but android wear will truly make me go back to a nexus 5. I honestly do not think apple's rumored watch will have the functionality of the android wear watches. Even "hey siri" only works when the phone will be plugged in, which leads me to believe the watch will not have a similar feature.
Out of the two on the market now, I would pick the samsung. It has a better screen and some better features. It also is $50 cheaper. Hopefully we hear something about the moto 360 soon!