Its a shame I only just found this thread as I will give the thumbs up for the Sony ereader and the thumbs down for the kindle. Dh has the kindle (loves it) I have the Sony ereader (adore it) I got mine 3 years ago so before the kindle was available but now dh has the kindle I have not for a moment regretted having the ereader. The kindle feels flimsy in contrast to the solid feel of the ereader (I am worried I will break it when I hold it - though thats better now that he has a cover for it)
There are several reasons why I prefeer the Sony to the kindle but the build factor is a huge issue for me I do not like how "plastic" to me the Kindle feels.
I find the kindle complex to work around where as I had the Sony for 5 mins and had it worked. I dont care for the keyboard set up on it I feel it is in the way.
I do not like the picture the kindle comes up with when it is switched of much prefeer the blank screen on the Sony.
The battery on the Sony lasts much longer than on the Kindle (I am talking 2-3 days longer)
I will give that the kindle is an easier upload plus for the Kindle But I do not find the Sony such a faff to do it takes concentration the first time you do it after that it is fairly easy..
If at all you are able to get a hold in one of each to feel and see how you like them then I would go for your gut instinct after that.
Dh is happy with the kindle likes he can d/l where ever he is. For methat is no biggy I am organised enough to ensure I have a new book loaded to read when I have almost finished the other I dont go into "sudden book panic" if I dont get there but I am aware for some that would be a plus.
Even if offered a swap now I wouldnt do so I just love the Sony ereader for me the feel and hold of it is as important as the feel and hold of a book and I just do not get that cosy up feeling with the kindle