I'm sure this has been covered elsewhere but FLAC is great.
The F in flac stands for FREE just like the A in ALAC stands for Apple.
As an apple
victim user, it's handy for me to have Apple's lossless files for my itunes/iphone, but for the rest of the world, and continued availability, FLAC is king.
WAV and AIFF are larger file size for no extra info, in fact, they don't really support the meta-data tags that FLAC and ALAC do...
Carry on with your FLAC self, and TAG THOSE PUPPIES!