Rocks? Enh... It's very good. It does a lot of things very well. For example, it has an amazingly strong underlying file format (ODF) which enables excellent integration into complex processes; its import/exports are improving all the time; and its drawing engine is increasingly smart about SVG. I like it and admire it. But the team is also trying to fix/improve/move forward what started as a massive code base with beaucoup legacy issues. As either the comments below or a few minutes' hands-on use demonstrate, numerous "fit and finish" issues remain. If recent incremental releases move it from "unusable" to "usable" for some folks, great! But there hasn't been a recent massive upgrade; just steady progress.