Hi everyone, I am about to swithc from the iPhone 4 to the Pre 2 bec my girlfriend has one and I love it!

The only thing I feel very confused about is the ability to have a high level task manager (like Cultured Code things or Omni focus) on the Pre 2. Is this available and is there a way to have it sync to a desktop version on a mac? I really want the Pre but I need to be able to use it in the GTD way that I am used to. Please help me get onto the Pre!