Re: Reading in the bath
I just read in the bath anyway - Kobo Glo. It doesn't seem to mind getting steamed up.
I also have a 'reserve' Kobo touch, and a Kobo Mini with XCSoar and a GPS module added for both aerial navigation and those unavoidable 'waiting for the wind to get right' moments.
I'd argue for the Kobo for one simple reason: it reads ePubs, and you can grow your own without being tied into shops and DRM. And of course Calibre for the book management.
Minor grumps: the desktop Kobo software refuses to accept anything that you haven't bought from the shop actually exists; and that even with the welcome addition of shelves, there still isn't an automatic 'would you like me to arrange all your books on shelves, in alphabetic order by author?'.