I've owned every generation of the watch so far, but I'm going to skip the Series 4even though I agree that the watch looks great (although the earlier ones do, too). Each version was a significant improvement over the prior one (Series 3 adding LTE and a real nice speed bump), and the Series 4 certainly seems better, but the Series 3 got the watch to where I needed it to be. Given that it is a new design with a significant new feature (ECG), I'm willing to wait for Apple to refine it for next year. I want to see the Series 4 in person, too, because of the size increase. Hopefully, they will continue with the same case design next year so I can still use all the bands I've accumulated. And better battery live when using LTE/GPS.
What is annoying to me is that Apple still does not have a non-Hermes face that is mimics a more traditional square/rectangle watch face. The round face within a square shape is the main reason why I use the modular face. Not clear whether the existing modular face is still available on the Series 4, or if the only choice is the new round one (which is extremely busy).
Still, the Apple Watch is definitely coming into its own. Great watch, and am looking forward to hearing about people's experience with the Series 4. I may break down yet.