Perhaps it's because they use a proprietary connector, but the Galaxy Tab 10.1 has adapters for USB and SD, and I've used both of them to transfer new data to my Tab while on vacation. I brought along some media on the Tab, and some media on a couple 16GB thumb drives, and I was able to transfer it over. It wasn't the greatest experience though. Very clunky and VERY slow.

The storage space will be an issue for some people, and for those the 7 might not be a good option. For me, I would mostly use the device to stream Netflix, I get my music through rdio, I can throw photos on Picasa Web Albums (which automatically syncs to the device), and that's pretty much it for stuff I'd want to store locally. I've had my Tab for a year or so now and I have at least 8GB free.