Max
iPF Noob
I figure 16gb is enough for me but I have a 32 gb iPhone with all my music and videos on it. iPad2 is for books and apps and if I want to watch a movie on the bigger screen I have airveiw for that to stream movies form my iPhone to my iPad and last I have photos and misc stuff on dropbox plus when I travel I also have my 32gb first gen iPad aswell for backup.
Awesome example on the perfect setup between the iPhone and the pad. Personally I only use dropbox for textfiles. Web album (picasa and facebook) rocks for pics as it caches them for offline viewing.