I am not sure if they are stil available, but if you can get your hands on 3 Custom Color Specialist Concealer Palette, you will have a good thing. It comes in 10 shades and they mix really well for desire shad, if your not one of the ten first up. The coverage is excellent and it is very longwearing. IMHO.
Failing that, I use the following with a fair amount of success:
Px Camouflage (sp.?)kit
Benefit Playsticks ( as concealer)
BECCA concealer (love this)
Stephane Marais stick concealers *cry* so sad this has been d/c'd
This ought to give you a few ideas.