You may want to rethink your workflow a little bit. (I have, after getting EF.) My projects typically involve, like yours (it sounds like), quotes from sources, Word documents I’m using to write and organize a piece (whereas you use Pages), pdf’s and Web archives that serve as further source material.
I use RTF files for things like notetaking and maintaining to-do lists. That makes EF much more user-friendly. I have a file for each interviewee. Using RTF files, you can either type quotes into the window of EF (the easiest way) or double click and open up the actual file. (that’s sometimes useful if you want to have multiple notes-windows open.)
I only use Word (for you read: Pages) for more intense word-processing functions like outlining and drafting. For simple notetaking, it’s a pain to have to open the files with an external program just to add a few lines.
I guess Word must be more compatible with EF than Pages, as I can scroll and search (but not edit, of course) using the EF window. (PS: I see that Michael already addressed this point. Yes, Word is more compatible.)