Great post, and sounds like you are going to have a long and happy relationship with your 900
It does take a little while to get used of reading on a reader. I have read ebooks for 10 years, but always on a backlit screen. I did purchase a cheap light at Target, and when I am away from sunlight or lamp, it works great. I have no interest or need in the wireless connection, as I do not buy from the Sony store. But, I would perhaps in a year or so like a bigger screen. The screen size has to be pretty cool on your 900.
And now, I too have to get back to reading