Cream of the Crop
I’ve tried many notebook type apps, and Notebooks seems to be the most well rounded for my needs. Notebooks is feature loaded and can handle pretty much any file. It works across all my Apple devices (currently via Dropbox, but the devs are creating "a little Mac app which basically is a WebDAV server, but one that runs on your Mac on your WiFi. So with the sync capabilities already built into Notebooks on iPad and iPhone, you will be able to sync with a local folder on your Mac”). Support questions are answered promptly by the developer. And, I especially like that Notebooks does not use a proprietary file system so my files aren’t locked into the app for eternity. The search and wait is over! Yay!
DayWhirl about
Notebooks - All Your Documents, Files and Tasks