Nook Vs. Kindle - What's the Story?

My mystery/suspense novel, Night Watch is available as both a Nook and a Kindle book as well as a trade paperback. Ever since my publisher released the Nookbooks version, I have wondered what the difference is in sales between the two e-book formats for other authors.

I've watched the ads for both. Kindle looks like a good e-reader, and Nook looks great for the visual folks among us who like to see color whenever we can.

So far, I hate to admit it, but I do not own an e-reader. If I had one, I don't know when I would use it. Life just gets in the way.

Still, I find the technology fascinating, and I long to try one out. But I don't want anything else I don't have time to use right away.

What about you? What's the story between Kindle and Nook? Or does each have its own place in our ballooning technological society? I'd love to hear your story...