neither, they are basically the same - suckish! do a little research on Bittorrent. Its a more reliable method of getting files legal or otherwise. Sites like isohunt.com will help you find the .torrent files. all you need then is a torrent client like BitComet. you may have to learn a little bit about PORT FORWARDING on your router if you're using one. Thats simple enough too. once all it setup you will actually get the files without worrying about how much you're sharing and they will most likely be faster overall. Especially for large files.
if you a real nut for downloading files, I would even recommend using linux. Ubuntu on a liveCD will allow you to do some nice downloading. When i switched to Ubuntu in 06 my download speed went up about 150Kbs to 200Kbs on top of my already fast cable connection.