I bloody give up 

I LOVE this stuff but cannot for the life of me get properly shade matched.
I am a bit lighter than Mac NW20,so fair skinned with rosy undertones.
If I use Fresco in DW it's good but slight too dark so I just need to go slightly lighter.
I have tried Pale Almond, Dawn ( because I read you should NEVER use a cool toned foundation as it will look hideous
) and yesterday got matched with Cool Beige but it STILL doesn't look right.
I tried a Clinique foundation in Alabaster which was the most perfect colour ever ,think it was Even Better Foundation but it doesn't last more than a couple of hours. What's the best Clinique foundation,anyone know?
Dear God,it can't be this hard to find a foundation,surely?
If I mix Bourjois Healthy Mix with Fresco I get a better colour.
Sigh....
What other foundations are as good coverage as Double Wear please?