Will take a look at mesh in the morning. Looks good. Ive been using live sync for ages now. Great free app by ms. But both pcs need to be online to sync.
The thing I've found slightly alarming about mesh is that the files aren't encrypted on the server side. So a nosey admin could just browse through your files if he wanted.
I don't know if dropbox does this or not. Either way I'm using live mesh for my random image collection at the moment. I could use dropbox for documents provided I know it's secure.
Failing all that I could use a truecrypt volume with mesh, but I don't like the idea of syncing up one big file.