I've had mine now for over a year and have so many books on it that there isn't room to list them all--just added Mark Twain's autobiography and a great time waster called Every Word. I also have the iphone and PC apps so can read my stuff either place. Hint: If you are going from one device to another you need to sync to get to the last page read.
The biggest problem is that you can't share a book with others but I see they're about to make that possible come the spring. You will be able to share some books--the publisher will be the determining factor--between kindles for a period of 2 weeks but only be able to share a particular book once. Aside from that the newer version does allow you to highlight and send passages from one kindle to a PC so you can send quotes if you want. Of course all books published prior to 1927 are no longer copyrighted so they are free through
Amazon so most classics are easy to get. That means on a cold, snowy night when there is nothing in the house to read you can curl up in front of the fire and download Jane Eyre to read for free.
ETA: Most of what I have on mine is nonfiction--I'd say 75-25%--much of which contains pictures and I have no problem with them. If there is a drawback it may be that often a picture is on one page and takes up so much room that the information about it is on the next page, i.e. the names of the people pictured, so you have to flip back and forth. I'm from an era where our pictures were all in b/w anyway so have no problem with that. I have found that it is kind of a pita to flip around but that may be because I've never taken the time to master the ability to bookmark pages. On the other hand, the kindle has a built in dictionary so if you come across a word and want to know it's meaning, highlight it and go to the dictionary, it'll give you this information right at the bottom of the page.
Also another thing I like is that I am an author and when my publisher sends the pdf of my books for proofing I can download them to the kindle and work from there--much easier than using a computer screen and saves paper as they don't have to be printed off.
BTW, as far as availability of books is concerned, Amazon.com has every book published for sale. That doesn't mean all are downloadable to the kindle because that is a author/publisher agreement with
Amazon and there are some authors that aren't interested in doing it. On the other hand, while
Amazon charges less for a book, it pays a better amount in royalties than most publishers do since they have very little cost.