Someone was asking me about good HDRI's for Vray lights the other day so I thought I'd repost this one... http://www.turbosquid.com/HDR Studio Lights
I love using Vray lights for soft shadows and reflections, but often they look very artifical and fake. Adding and HDR image to your area light make your stuff look so much more natural.
Here's a reflection in a car with a simple white Vray light plane.
It's nice, but the light gives a perfect square of light. No hot spots, and perfectly clean edges. Now take a look at some examples of using HDR images of some studio lights.
I use these images on every project I work on. I captured a bunch of stage lights and use them on Vray lights to get much more realistic reflections and lighting on my CG.