Watch OS 3 is leaps and bounds better than the previous iterations. Honestly, it's a shame that the public had to see wOS 1 and 2. I too waited. My Series 2 is my first smart watch, but as the family tech support guy I've dealt with the first round and previous two OSs. And those were not a product I could recommend. But I really like my Series 2 running wOS 3. The interface is so much more intuitive and overall simpler. I really can't see what Kuo is complaining about regarding the user interface, not in v3.I think the interface is superb, not sure where this analyst would suggest improvement. Oh and I am getting a lot of style points too with my classic leather buckle.
I am using a third party band, and that too is a nice perk. I like that I can rather cheaply pick from tons of bands to find the one that suits me the best (Apple's own bands are overpriced so whatever on those). I'm not saying that only the Apple Watch can do this, but it does seem like their self-contained little box lends itself well to a lot of mix-n-matching options.