I like mine (first-gen LG G Watch).
If you're thinking about buying a new one right now though, I would wait. A number of models are supposedly coming out in September/October; most of the ones currently on the market will be fairly obsolete then. Plus, it's not really a "must have" right now; it's nice, I find it's great to get notifications on my wrist, but it's still very much an early-adopter toy.