MINER  I started using this app at v2. Like all ConceptDraw, the underlying concept is well executed, but the cross platform nature of the app does show up at the UI.

This version 3 is however a major leap forward in UI goodness (and I keep underestimating how important that is to me).

One killer feature that kept me with CD Project, in v2, is that a Project file can be a small bundle of projects, each of which can be represented in a all encompassing project, but which keeps tracking subprojects clean. The big plus with CD is that activities from different projects in the bundle can be linked to each other in the encompassing project. Difficult to explain, but unique for this program as far as I know.

Unfortunately the upgrade to v3 has temporarily disabled this feature, but CS Odessa ensured me it will return in an update.

Responsive support, too, especially on their forum.  
(Version 3.1)

ANONYMOUS  $180? For this? Not as it is now! How about if you make it work properly then take money from people. Their marketing people must be delusional. Yo, programmers, it's still flaky. Tested in 10.3. Lines/links between task bars in Gantt charts easily become disconnected and free-float when column widths are changed or sometimes when view is changed from daily to weekly. When changing column widths the column title box width stays the same but the rest of the column changes (workaround is to change the width then deselect one column from 'Column view' setting, hit OK, then reselect it, hit OK; the column will then be correctly drawn). Sometimes draws part of Gantt chart in Column window, and vice versa. Also, how about direct import/export of MS Project .mpp files? and ability to change fonts and font sizes? Crashes with "unexpectedly quit" error when closing documents. On the plus side, it does export graphics well in different formats and the parts that work are pretty easy to use. OK effort for project sw, but would be better if it were more stable.  
(Version 1.0.2)