IMHO most of what Barnes & Noble is touting about the Nook is a lot of hype. Probably the only good thing about it is the fact that it uses the ePub format which means you can borrow eBooks from the library. Sure the little LCD screen is cute, but how functional will it really be on an eReader? And it will probably be useless in direct sunlight even though the eInk screen will be readable.
Although you can lend books on the Nook, it is only for a 14 day period and you can only do it once. When you do lend a book, you yourself cannot read it. In addition, it will be up to the publisher to decide if a book is lendable.
That said, I own a Kindle and yes, I'm biased.
Here is Znet's take on the Nook.B&N's Nook e-reader: Weirdly unrevolutionary | Rational rants | ZDNet.com
There has also been an interesting development regarding the Kindle (K2). A couple of weeks ago, Amazon dropped the price to $259 and introduced a new international version (which can also be used in the U.S.) for $279. The major difference is that the international K2 version uses AT&T while the U.S.-only K2 uses Sprint.
Today Amazon announced that due to the apparent overwhelming interest in the international version, it will now be the only K2 version available. In addition, the price has now dropped to $259. A lot of owners of the original (K1) and U.S.-only K2 are concerned that Amazon will abandon Sprint, basically making their Kindles useless as far as a wireless device goes. Amazon is still selling the DX version though which also uses Sprint.