The reason I skipped Series 3 was because I knew Series 4 was going to be a design change and there were rumors of a big screen coming down the pipe. Glad I held out. If I had to do it all over again though, I'd have skipped Series 0, bought a cheaper Series 1, and then got the 44MM SS Series 4 that I have coming in a couple weeks and use that for 3-4 years. I think from here on out I'm only going to upgrade when there are bigger changes such as radical new health sensors that would be useful to me (such as blood pressure since I have elevated levels or glucose monitoring because diabetes runs in part of my family) or form factor changes (such as offering a bigger 48mm max version, or moving on from the 2.5D glass and pushing the bezel to the actual edges on a redesigned thinner case, etc).
