I have an OG Day 1 AWU with functional Blood Oxygen Sensor. Do I want to give that functionality up.... not necessarily. How many times have I used that feature.... Less than 3. Ive got my battery set to only charge to 75 or 80% but it still lasts me the day. I would love a Black AWU (yes i know the 2 comes in Black), but at this point, im not going to spend my money on old tech. My biggest gripe (and its 100% my fault) is that i cant easily use things like Apple Pay as I have two full sleeves of color tattoos, so if i wanted to use Apple Pay or do anything that requires you to have a pin on the watch, i would have to unlock it every time i needed to interact with it, which is very inconvenient, so i just dont use those features. I just wish they would figure THAT part out more than anything. A bigger, brighter screen is always welcome in my book as well.