My beloved Kindle Keyboard - my first experience of an ebook reader - is dying after just short of 18 months use. I decided to bite the bullet and be unfaithful, and after much deliberation - mainly between the Kobo Touch and this - decided I preferred the look of the Sony model.
The screen is easily as good as that on the Kindle - with crisp, clear non-backlit e-ink technology that is a pleasure to read from. Even for prolonged periods of time. The touchscreen technology is easy to use with the provided stylus - so there's no need to worry about fingerprint residue. Though the screen is generally easy to navigate with your fingertips, should you prefer to do so. For reading purposes, I found I didn't get on well with the swipe for page turn function using my fingertips - in cold weather my Raynaud's stiffened finger swipes don't seem to register properly and I find myself going involuntarily backwards. Fortunately, the Sony reader has 5 buttons below the screen: page turn left, page turn right, home, undo/back, and menu.
The note-taking function on this - doesn't allow printed notes but, rather, uses the touch screen interface to allow handwritten notes to be added to the text. Much like writing notes on a textbook. These display alongside the 'print' and are as clear as the combination of stylus use, pixels and your handwriting allow. I've had none of the problems with the device falling over that have plagued my Kindle and between this and the infinitely superior support for .pdfs find this a better device for academic work.
The software interface provided is clunky. It took a ridiculous hour and a half for the software to download from the reader (it's preinstalled to the flash memory, rather than supplied as a separate disc) to my MacBook - and it wasn't worth the wait. The cumbersome, time-consuming, and repetitive interface is not a lot of fun. However, there's no need to use it. Calibre does a much better job.
Overall, a great device that performs well.