Bamboo is quite simple app for fast notetaking and I like its pens (also have their stylus). But quite often I need Dropbox or Google Drive services for sharing, so I have another app for working.
Very clean and simple, things that I like. But sometimes too simple (limited tools, no books in books...). So while I found others for note taking and sketching, Bamboo Paper is still my favorite for doodl'ing, you know - first idea scribbling.
It was updated only very recently and now supports Dropbox and Evernote export.
I agree with those saying Bamboo is nice, but too simple for my note taking purposes. I use Notability for hand writing, and I also really like 7NotesHD.