Let's start with the last issue (logical.. hehe!): I was (am?) only a tad bit disappointed with the 770. Namely it's very poor at displaying PDF files. Both with the internal reader and Esence (can't remember the exact name). I'm also not too excited about FB2 for other ebooks, even though the people here seem to love it. But feck, I didn't buy it to read books... so it was only a minor letdown. I hope my advice will bring you pleasure.