Upgraded from a wifi-only Series 3. Initial impressions: bigger screen with less bezel is awesome. Faster as well. Cellular connectivity will come in handy when I forget my phone. All in all, pretty happy with my purchase thus far.
I love this watch!! I upgraded from a previous model, and am so pleased with this purchase. The slightly bigger screen has been so nice, and the apps work much faster. The color of the watch and band are very pretty.
I love it. So many times I find myself away from my iPhone when I get a call and now I don't have to rush to get to my phone. It very user friendly and I'm still discovering all it has to offer.