"The sensors fall off when I charge the watch"-gate"Unpolished"? Hardware wise is perfect, no "-gates" whatsoever this time around. As opposite, real world performance far exceeds Apple's claims (battery, waterproofing).
Software works amazingly, with no bugs at all in my experience. It's the most polished experience I have ever had in a new Apple product category, and my first Apple was a 7100.
I don't use apps BTW, because until 2.0 it makes no sense.
Joking aside, I think the hardware side of the watch is really great. But I wish the battery life could last a few days more.