I’ve been using LibreOffice for years and the only problems I’ve encountered have been with my “wishlist”. It keeps improving one way or another and the team at The Document Foundation has just released LibreOffice4.2 with a long list of improvements, including code-quality.
See 4.2 Features or just download it and run it. It’s available for GNU/Linux, that other OS and Mac OS. My Beast runs Debian GNU/Linux on AMD64. This is the 4.2.0 release which has many changes and may still be buggy but if you like the latest bells and whistles, go for it.