If you are relying on Internet access to get at the stuff, why not leave it at home (presumably a desktop) and access it remotely on your travelling device etc?
I now mainly travel with an iPad, and access my desktop using LogMeIn, there is a good free option and paid options too (ignition for iPhone and iPad I have).
I can get control of all my information securely when I have Internet or wifi access, and it does not leave my control (if you have security issues with offsite storage)
I use Dropbox to hold and sync some files.
After note: see post #11, - something like LogMeIn let's you access this remotely, rather than trust it to "the cloud" only.
Last edited by antichef; Jul 26, 2011 at 4:53 pm
Reason: Comment on later post giving other option