Project Management

I'm looking for an app for complex project management--I need features like the ability to keep track of several projects with sub-tasks, notes on the subtasks, the ability to keep track ot time spent on projects and subtasks. There are tons of them out there, but not many reviews on AppleVis. I just was looking into 2Do, because it has the ability to add voice notes to tasks. I composed a question to them on their web site about whether the app was accessible with VO, only to reach an image verification thing at the bottom of the form. Obviously they're not interested in blind customers, and I'm not buying something I won't be able to get support for. Has anyone tried any of the many many others out there? I don't have time to go through this with each one, or I probably wouldn't need time management apps .