[manjug]

I have been considering an e-reader for myself, but have not yet bought one. But I have also been asked to help a friend who is becoming increasingly disabled to choose one, and I am not able to survey the whole market physically speaking. So I turn to you all for advice.
My friend is losing arm and hand movement through illness. She can move, but not use much, her right arm and hand, and so has basically now got the use only of her left hand, which has some strength but not as much as normal. She still has some ability in it, and can "pinch". Turning the pages of, and even holding, a normal book (particulary a paperback) is now becoming very difficult for her, even though reading is very important.
Hence my suggestion of an e-reader. She will need one in which the buttons are not too stiff, and certainly one on which the page turning buttons are easy to use in terms of size, placing and pressure. I have ruled out the irex, because while the page turn bar might be usable I think she would struggle with the stylus. I have prodded the Sony, and it might do - the page turn buttons on the right are out of the question, but the bottom left button would do, and I think it may be sufficiently proddable. But can any of you wise people, with more experience than me, help me any further? Should I be looking at anything else? It must obviously be light, but then they all qualify in that respect.

One more criterion - I am in the UK, so the machine will have to be sourced here.

I would be very grateful for any help any of you can give me