The big difference is
#1, You don't have to fill up your hard drive.
#2, You don't have to waste your time downloading.
#3, I can stream on anything that has an internet connection, which by the way is getting to be almost all gadgets. wifi or 3g/4g.
#4, I can stream on a PC, MAC, Linux or whatever, no special software needed other then a browser.
Data usage is equal for downloading and streaming.
Actually I think streaming uses less data because. If it is not the right song I can stop listening to it right away and not waste data usage, can't do that with downloading.
NO DRM on streaming.
Should I continue?