After having bought most of existing task application (incl. PocketInformant, 2Do, etc.) TaskTask is the only application I found truly syncing ALL items of the Outlook 2007+ ToDo list, incl. flagged emails w/ reminders. It syncs w/ Exchange directly, no need for Toodledo client/iPhone sync tool/app. On the down side, this application is not specifically eye-candy (eg not using category colors set on exchange), and most importantly, emails linked to tasks (as opposite to flagged emails) are not downloaded: if you add a task and link one or many emails to it, only the title will be part of d/l task. Not truly productive! Also I wish I could take action right out of the app (eg. send email from a task, add image or sound, have location-contextualized tasks, etc, all not part of this current version). I dont know if there will be continuous development to that app, but for now, I find it useful and well done apart from the few aforementioned glitches.