Ok where to start...
I'm not a liquid foundation lover.. I hate it, so wasn't really waiting for a miracle with this foundation (all my hopes were in the concealers..) but! It was love at first use!
This foundation is so easy to apply and looks great, you look natural AND most important of all for me : the feeling is so natural too! my skin still breath.
So if you didn't try it go and do so! right now!
For the shades: they are definitively different. They changed the undertone or I don't know what : I personally think it would be a great thing to try it first prior to buy. Some person still fits with their usual shades but others got new love on others ones.. it's just not the same. (At least that's what my eyes are telling me.. yours may say something different..)
(I'm still playing with the concealer I'll review it later..)
**PS I'm happy for the color change because this color is perfect on my skin, it doesn't look like a foundation color it looks like a skin color.... how can I say that.. : like it has more life to it !? **
**Before I was NC20. I was mixing some NW20 because my skin is already pretty yellow. But with SSF in NC15; I look flawlessly natural.**