sgecko, I think that
taska does it in a really nice way, check some screenshots
http://www.macstories.net/ipad/taska-review/
I've tried things, ToDo and TaskA and the best of them is probably TaskA.
I was using it for a few days and the batch actions and checklists are really nice. The problem is that I needed to sync with my computer so for now I'm using OF for the iphone with fullforce to get ipad resolution.