I have opened doc's with each office suite:
OpenOffice and LibreOffice take an aeon to load the first time your PC is powered up, for me that's not worth the effort, mainly because I rarely use office suite's for anything.
AshampooOffice is a fast starting app but seems to have issues with certain aspects of formatting correctly. It doesn't show doc's correctly sometimes and the BulletPoints wouldn't work correctly in a table when used in the second column.
WPSOffice is the only app that has shown all types of doc's without a hitch and even created my own without issues of any kind. Hence it being my faourite.
Just thought I'd add my experience in the hope it may benefit someone else
