I have ordered the Ergo Performance from amazon (free returns) to compare for a few reasons:
1) Lighter: I tried one on at Happy Bambino (Madison, WI) when he was 1 month old and I remember it being significantly (1/3) lighter than the original.
2) Fashion: It feels and looks more sleek/form fitting and I just love the green color.
3) Comfort: mesh panel and lighter (I would even say softer) fabric
4) Versatile: expandable for taller/wider people: My dad recently lost 90lbs. but is still a very tall man. With the Ergo Original, my son was uncomfortable because of the way he sat so low on my dad's back with the carrier on my dads hips (my dad's torso is very long). My son couldn't see as well and was almost in a slanted back position if you can imagine and therefore my dad can't use this carrier :(
My Performance will come today, so I will hopefully do a video to let you know how it goes.