The Best Foundation I've ever used is Bobbi Brown Moisture Rich Foundation.
I've been using this foundation for so long time and it is great. Its the best foundation I've ever used and before I finish the bottle I buy another one. My skin is dry/combination and this foundation gives me a natural coverage ( which is buildable without cakiness). This liquid foundation is so flexible and easy to blend. It has an spf 15 and i know it is not enough for our weather but but it is good for sensitve skin. This foundation stays the whole day without breaking. It looks and feels great on the skin . It match any skin tone/color.
The only down side of this foundation is the packaging , it does not have a bump so you have to pour some of the foundation on your hand .