If they outfit one with a bigger screen and greater processing power so switching pages is fast and it's easier to flip (unless I'm under the wrong impression and the page-lag for the paperwhite is because of the screen not the CPU) then you could have a superior referece platform. Multiple bookmarks, search functionality, cross-referece.

For my job I have to read a lot of datasheets. Ctrl-F works wonders and I have no ideea how I'd manage without it.