Ranked in these QuestionsQuestion Ranking
Pro Great functionality, lots of options
Cost, percent done, priority, you name it - you have it. If you prefer simple layout - no problem. You can configure everything
Pro Comments with richtext format
It means comments can have different fonts, links to the pages or links to another tasks. You can format text your way.
Con Android app is in early stages still
Only the Windows version is fully-featured. The Android app is still in early development.