Ok, so I never really tried to look at the difference between the same file in pdf and epub. I did that and took pictures. Sorry my pictures suck, I wasn't sure what setting to put the camera on. A video would probably be better thinking on it now.
pdf (no converting):
http://img.photobucket.com/albums/v2...s/P1010245.jpg
http://img.photobucket.com/albums/v2...s/P1010252.jpg
http://img.photobucket.com/albums/v2...s/P1010257.jpg
epub (I converted with calibre)
http://img.photobucket.com/albums/v2...s/P1010258.jpg
http://img.photobucket.com/albums/v2...s/P1010259.jpg
http://img.photobucket.com/albums/v2...s/P1010260.jpg
You will notice the epub has a lot of spaces where there aren't supposed to be. The pdf though on small font doesn't take up enough of the page (I don't like big font), so you would probably need to have it on medium or large to fill the page. The pdf actually looks better.