I guess I am late to put in my 2 cents here, but I have tried the following apps for getting myself organized and each one of them has its own pros and cons. Totally depends where you would want to draw the line, though.:-
1. Evernote - the latest version comes with reminders, and it syncs with your email account as well
2. Top Task List - Offers Skydrive Integration, email integration, reminders, priorities, accountability (as in who is responsible for that task, links it with the phone contact list), tasks within a task (this i think is a really cool feature)
3. Effectual - haven't used it as I am on wp7.8, but I have seen my friends on WP 8 use it, neat and clear interface, syncs with Skydrive, has reminders, priorities
4. Tiny Do - neat and clean interface, reminders, sync options
Let us in the community know what worked for you
