Light Response Self-Adjusting Undereye Concealer (whew!). Been using this product for about two years now and it's my choice for daily wear. Goes on light, unlike some concealers that go on thick and heavy. So you don't need to worry about blending when you're in a rush. Just a light dab here and there, and you should be good to go. To blend, I just use my finger or Suesh's large concealer brush.
Caramel is the shade I use, not just for the undereye area, but in other parts of my face that need to even out - sides of the nose, under the lip, and it does a decent job concealing broken capillaries too! I have very dark circles around my eyes and this works really well in lightening it. Don't expect it to eliminate the dark circles... that's just not realistic.
Make-up, no matter how much primer you put, will eventually fade. You'll need to check every few hours if your concealer is still even. If you have fine lines, some product may settle after a few hours. Just go back to dabbing to even it out, apply a bit more if needed, and pat with some power inward.
Prestige has affordable makeup items and this one is a pretty good deal.