xjournal is not bad, but there is one extra file always there, which is annoying.
I love Foxit in Windows and here is the guide for installation:
http://ubuntuhandbook.org/index.php/2015/09/install-foxit-reader-in-ubuntu/
https://www.foxitsoftware.com/downloads/thanks.php?product=Foxit-Reader&platform=Linux-32-bit&version=1.1.0.0225&package_type=run&language=English
