I'm mostly same as you, Andy. Have had a 9" tablet notebook for years, have tried various electronic entry forms, including typing & ink. OneNote seemed to work best. But ultimately I have gone exclusively to paper notes. My notes also last only a day or two, and I move anything important to my desktop: OneNote for notes, Outlook for tasks and scheduling. I think process of reviewing and dispositioning these notes is worthwhile exercise, and is why paper wins for me--when I take electronic notes directly, I don't have to do this part (I can, but don't HAVE to).
Never heard of the Arc before, looks good. I have been a diehard Levenger Circa fan ever since my brother gave me one about 5 years ago. Until Circa, I tried a new system out every year or two, always looking for the right tool. Have not looked since.