Like a lot of technology, portable storage is remarkably complicated once you get into it. You need some more space so you go to get an external drive, but there are hundreds of different types. What's the difference? What do I need?
If you are short of time, here's the summary:
- To carry a small number of files - Sandisk Micro
- To carry more data, including large files, but lightweight - Seagate FreeAgent.
No need to carry a laptop around. Just carry the data and plug it into an available PC. Use SyncToy to keep data up to date in several places.