I bought this to replace a Sony PRS-300 that I thought was too heavy and too slow in the page turning.  Yes, the nook is quicker on the page turning and lighter but I am having too much trouble to appreciate faster and lighter.  I am having an infinite amount of trouble getting library books onto the nook - I've yet to succeed and the problems lie with adobe digital editions.  Why aren't nooks plug and play?  That's my first big problem.  I have no problem with my Sony and the library book I wanted is now on my Sony.  The second is that I like to read while I'm eating my lunch - ereader in left hand and fork in right.  It is not easy to change the page on the nook while eating - the bottom right corner is too far from my thumb and the bottom buttons are too high up the side.  The Sony has a set of buttons right in the bottom center, which is perfect placement.  I read the great reviews on the nook and for the price, I thought it was worth a try.  I'm also disappointed with the wifi registration requirement and wifi in general.  I don't need wifi on my ereader but it looks like they're all offering it now.  I also don't appreciate my registration info being used by B&N as permission to start emailing me crap - I am already unsubscribed from that 'service'.  I'm definitely not happy with the nook and I'm going to save up my money to buy another Sony.