Battery life was a big selling point for me, along with more memory as I use my watch to play music in my AirPods while exercising, faster response, and not having to worry about buying a screen protector and or case. The battery life alone was worth the price, my Series 7 would make it barely 18 hours while using cellular and my daily routine, my Ultra lasts almost 70 hours between charges.
Wear it 24/7 and track all health analytics in the Athlytic app