Bitmasking on or off

I recently added something called bitmasking to smooth out the walls and make them look like proper walls and not separate blocks of stone laid out to next to each other. Personally I like the bitmasked version better, but who knows, maybe you guys prefer the old way? Have a look at this before and after picture and let me know what you think:

BEFORE

AFTER 

More about bitmasking here: http://www.angryfishstudios.com/2011/04/adventures-in-bitmasking/