Compare these 2 images:

http://imgur.com/1WRJR.png
http://imgur.com/lpNnG.png

Personally I think the scaling in image 1 is much better looking than the nearest neighbor scaling form scale:2, of course there are many more types of scaling that could be done if you don't like the look of the top image and all of them are better than nearest-neighbor :p/

EDIT: fixed giant images