So I have a black Gear S2, and I like it, but the 'ecosystem within an ecosystem' thing is starting to feel a bit restrictive. I'm already in bed with Google/ Android, and there's not a lot of room left for Samsung/Tizen. I'm considering trading my watch for an Android Wear watch, but I'm not sure what watch would be the best equivalent to the S2 as far as specs, cost, upgradability, etc. Any thoughts? Thanks!