“[Microsoft claims] that it would cost $30,000US to fill a 120 gigabyte iPod with music, and only 15 dollars a month for a Zune pass”
The Unofficial Apple Weblog (TUAW)
As TUAW points out, there’s some fuzzy math behind these claims, and I’m sure we’ve all seen the arguments dissecting this particular claim (“I already own that much music”, “I want to keep what I pay for without paying a monthly fee forever”, etc.)