Forget about the watch, I’ll stay with my first gen stainless steel as long as it works. Those sneakers though, really nice!
Honestly, I just upgraded from a S0 to a S3. I did so only because I wanted to hear Siri's voice. BUT wow! aside from that the watches are night and day. S3 does everything almost instantly whereas my S0 took a year and a say for the most basic of Siri commands. Opening apps up with S3 is more like opening one up on my Mac today where S0 was like when programs had to be loaded off tape or floppy and took a good few minutes. Totally different user experience.