I read a great deal of reviews about the various ereaders on the market and ended up narrowing it down to the sony ereader and the kindle. I opted for the kindle; the amazon ebook store won me over, purely for the convenience factor.
I liked how it arrived with some charge; I didn't have to wait to test it out! After approximately three minutes I had my first book and was ready to go. I was not disappointed. The device is lightweight, easy to hold and the screen is truly genius - I was very wary of the reviews I had read and was pleasantly surprised to discover that it really does resemble paper and is completely glare free. I am partially sighted so the option to easily change the font size is possibly one of the best features the kindle has! Another feature I am fond of is the "percentage read" diagram - I enjoy the satisfaaction involved with being able to see how much you've read and knowing you've reached the half way mark, or only have about a third to go etc with a physical book, and thought I'd have to miss out. However, amazon have come up with a satisfactory solution - at the bottom of the screen is a bar with the percentage you have read next to it, and the percentage of the bar is shaded. It is rather nice watching it go up 1% at a time!
The Amazon Kindle store is very easy to navigate and purchased books literally reach you in seconds.
Another feature which I use a lot (which I have noticed is not widely publicised) is the email function. You can send a blank email with an attachment (pdf, word documents etc) and change the subject to "convert" and you will get the documents sent to your kindle and converted to kindle ebook format. Of course, you can also email personal documents without changing the subject title to receive pdf files - this is particularly handy for timetables etc Do note, however, that there is a charge per megabite for emailing personal documents whilst using the 3G connection, so it is wise to set up the wi-fi if possible. The amazon link regarding this is here, it is near the bottom of the page.
I didn't splash out and purchase the official amazon kindle cover but have got a very nice one, which I would recommend. It is availlable in a number of colours. TeckNet® Kindle Keyboard Premium Folio Case / Cover for Amazon Kindle Keyboard / Kindle 3 - Purple
I also purchased a reading light which is really handy to have, as there is absolutely no back lighting on the kindle. I didn't want to have a nice fancy looking kindle with a nice case and buy a cheap and nasty light - most of which have rather lethal looking clips so opted for the Octovo Solis light which can easily be removed and has it's own battery source (AA battery) which is very easy to change. Again, I highly recommend it. OCTOVO Solis e-reader Led Light for Kindle (Fits the Kindle Touch, New Kindle, Kindle Keyboard & Nook Touch)
Overall, I am very happy with my purchase. I am able to read, check my social networking websites and play minesweeper all on the same device whilst on the go!