Maybe this is more appropriate for the technology thread, but does anyone know the difference in quality between and mp3 and an m4a? From what I understand m4as are better, but what really matters is the size of the file. So if the mp3 file is twice as big is it better? Where's the tipping point? Also, since I'm putting it on iTunes after downloading it, won't it just convert it to mp3 anyway? Do I lose quality in that conversion process?
I'm asking because I use "alternative means" to download music and I've received stuff of highly varying quality. I want the best possible balance of fast download and high quality.