[Moyra]

The most amazing peach tone concealer I've used is by Senna (sennacosmetics.com) called "Cameo". It is cream, but with a very light application, works miracles and won't crease, even on my, ahem, well-seasoned, undereye area. For a non-peach tone, their Candlelight is also great (yellow undertone).
As an all around liquid-from-heaven-that-hides-anything-I-can-hit-it-with, I can't reccomend their Totally Transforming Concealer highly enough. Its miraculous.
I discovered these about 5 months ago, and although I have many concealers, these are the absolute best!
Mac CCB in Hush also works as an undereye brightener and concealer, but it can be a little much unless applied super sparingly on the darkest, deepest part of your undereye hollows.