You also need to be careful that any new products you try don't start another break out.
After years of searching for the same thing my favourits are:-
Jane Iredale mineral makeup topped off with Bare Escentuals Mineral translucent powder.
Armani Luminous foundation which is gorgeous on again topped over with BE powder.
Kanebo foundation/powder all in one gives excellent coverage too and a lovely natural look - I use this when my skin is really yuck !
Another good one which is a US small foundation company called Illuminaire (do a google search and you should find it) her foundations are simply lovely. I think its called Flawness Finish adn they are designed to cover acne scars and have no troublesome ingredients.
Just remember that your skin never ever looks as bad as you think it does to other people.