If you have a hard time finding a matching shade, L'Oreal True Match has a ton of shades and undertones, and the formula is okay. I would say it's light-medium coverage.
ColorStay is nice, but it's pretty full-coverage. I wish they had more shades.
I like Neutrogena Healthy Skin as well. It has a nice formula and an alright shade selection. Light-medium coverage, if I remember correctly.
I've heard good things about Rimmel foundations, but the ones I've tried have been too dark on my pale skin.
I alternate between L'Oreal Magic Nude Liquid Powder and L'Oreal Magic Skin Beautifier BB Cream. Both are lightweight but I'd say the Liquid Powder has better coverage and a nicer finish. I think it's the cheap version of the Giorgio Armani Maestro foundation. My skin type is very similar to yours.