Personally, I like the *concept* of the "simplified" icon.
Some people call it childish, but it's not about being childish, rather than being "Easily recognisable". Trying to fit a cheetah in a 16x16 block doesn't really work (even though whoever did it did a stirling job!)
Personally, I like the paw... round one...
(http://i6.photobucket.com/albums/y212/reenen/LazarusProject.png)