wow, that IS a trusting soul !
i'm surprised it weighs the same as the K2, the K2 looks lighter to me (and yes i do realise just how absurd that sounds

).
collections : i don't think you can make them directly on the 700 : i always make them in calibre by adding tags or series info, then when i send the books to the device the tags / series are converted into collections.
thanks for sharing your impressions !