Anyone own or have used the Amazon Kindle?

I’m a big reader and most times when I leave the house I take 2 or 3 books with me just in case I get bored with one book or finish it, I can switch to another. Anyway, I have been reading up on the Kindle by Amazon and before I drop $150—$300 for one I wanted to know what other people think about the Kindle as opposed to the “Nook” sold by Barnes and Noble or any other similar device out there. Is is worth the money? What are some of the pros and cons on the Kindle?