[BookCat]

It's come to my attention that my prs-505 is getting old: the page turn buttons are starting to loosen and I think it's time to consider getting a back-up ereader for when my 505 kicks the bucket. I'm not aware of all the products on the market, but I'm not impressed by the ereaders I know about. There seem to be a bad batch to choose from.
I have a certain loyalty to the Sony brand purely because my 505 has been so perfect, apart from the difficulty in changing the battery, which I couldn't have done without the help of a friendly techie.
Bottom of the list are Kindles: I hate the idea of being tied into the Amazon model. I'm also fighting the notion that 'Kindle' is becoming like 'Hoover': an synonym for the device.

What I want from a reader:
6" Eink device
dedicated ereader
support for a wide range of formats including epub and rtf
buttons
SD card slot
long battery life (an easily changed one would be great)
reliability
good after sales care

What I don't care about:
wifi (I prefer sideloading)
internet browsing

What I don't want:
colour
integrated screen lighting
touch-screen only (no buttons)

A reader which comes with a cover, as the old Sony's used to, would be a bonus, but I'm prepared to buy these separately.

I'm not in any hurry at the moment, just running ideas through my mind, but sometime during this year I will probably have to purchase a new one BEFORE my old one bites the dust.

Thanks.