I'm using Doc's to go and the free sync tool. Have set up the sync tool to auto sync the most important stuff out of my PC's documents folder when I'm in the office. On the road, when I change or create files, they will be transferred back to my PC later and vice versa. Works like a charm. When presenting to customers, I go to my docs to go app, choose the file I want to present and open it in Keynote to present. All perfect. There is just one bad point: Pages & Co do not have a option "Open with ...". So I need to email files changed in IWork back to myself or copy to my cloud.