I am looking to get an apple watch but was waiting for the 2nd one to come out. After the keynote I don't think the series 2 will be worth it for me personally so I'm trying to decide between the older sport model or series 1. A few questions I have are 1. What are the main differences between the series 1 and the Sport? different Processor? 2. How does the os3 run on the sport edition with the older processor? Any insight would be great.