I think you're confusing two quite different devices. I can only comment on the netbooks.
Both the eee pc and the Aspire sell with 160Gb Hard Disks and 6-cell batteries. Both will help for long distance entertainment use.

There are lots of good netbook resources online, comparing different models, so have a good look around. Compare units side by side. I compared the two you mention and went with the eee pc for its larger screen, good keyboard and large battery.

I'm happy with it as a netbook but can't comment on it for ripped movies/tv use yet (nor the legality of using my movies on the netbook using ripping software).