Ask HN: OpenOffice or LibreOffice?

Which platform is more viable? Have you used any of these programs extensively? Is LibreOffice any better than OpenOffice in terms of equations handling? My experience with OpenOffice with respect to equations was at best terrible. I wish there was an open platform to replace Word but it seems that we are still far from that( with the respect to the developers of OO and LO).

Please do not suggest LaTeX as alternative for practical purposes(file sharing with colleagues that do not use it)