I'm looking for feedback from people who owned and used a Series 0 (original) Apple Watch for a while and then decided to upgrade to a Series 2. Specifically, I would like to know whether the CPU speed increase translates to a significant usability benefit. I've owned a Series 0 since the Apple Watch launched. I enjoy it quite a bit and get a lot of use out of it, particularly for checking time and weather, handling and responding to notifications, and using Siri hands-free. I'm a light user of third party apps. But although Watch OS3 helped performance a lot, I still find lag to be prevalent enough to be frustrating at times. The lag can be inconsistent, for example, sometimes launching Scribble doesn't take too long, but other times it's just long enough to make me want to give up. And perhaps I'm just spoiled by the silky-smoothness of using the iPhone 7. It's SO fast. I've watched the performance comparison videos on YouTube. They make it seem like the speed difference is there but isn't all that massive. But I don't think those videos fully represent what I'd experience. The watches are freshly rebooted and they just launch a couple of apps during the test. This upgrade I'm contemplating isn't "necessary" and would cost a premium (resale values on the old ones are poor). But I might do it anyway, if the speed increase is enough to make a difference in my enjoyment of the product.