I agree with many here--Blacktrack f/l is my main would-cause-death-in-event-of-discontinuation product!
But I also live for the StudioFinish concealer SPF35 in NC15--it's the ONLY concealer I've ever found that matches my (untanned) skin perfectly, and the texture/coverage is amazing. On the rare occasion when I need a bit of concealer, this is the only one I reach for!