I’ve enjoyed Apple watches for a number of years now, starting with a series 6. After two years, I upgraded to an eight and held onto that because I loved it until 2026. This Apple Watch Series 1 is a big upgrade in every way. I really like the blood pressure trend monitoring over 30 days. I also like the sleep apnea warning if there’s a trend in that direction. The battery life is better. The watch is 46 mm and thinner. I haven’t found a downside to this watch.