Okay, I am a novice with curling irons. I have medium-long hair that is wavy/frizzy and color-treated. I was looking for a tool that would give me a curl that lasts 2 days to reduce the amount of heat I put on my hair day to day. The Beachwaver S1 is SO GOOD at doing this. I can control the temperature and get a consistent, beautiful wave in very little time. I use a little hairspray and at the end of the day sleep with my curls pulled up on top of my head on a silk pillowcase...I wake up with curls for day 2 that only need a little texture spray and are good to go. I have not tried the original iron, but the S1 meets my needs and I can't imagine ever using a different iron.