Whats the best concealer?

I have combination skin and I get blemishes in my T-zone and need to use concealer every day. The best full-coverage concealer is probably the MAC studio effects concealer, because its so thick but light and gives a really nice heavy coverage so it hides all redness and dark spots. For just a cheap, everyday concealer is the Maybelline NY dream mousse concealer, because its super light and airy and has quite excellent coverage. For under the eye concealer, the best is Bobbi Brown, but just for a cheap drugstore one, the Physicians Fomula stick concealer or The Body Shop tea tree concealer stick are both good.