Online Music Stores - Which Do You Use?

"iTunes is still king with over two-thirds of the online music market according to NPD, but Amazon is solidifying its #2 status with prominent position on Android devices. The latest NPD data has iTunes at 69.9%, Amazon at 11.6% and Zune, Walmart, Napster and Rhapsody all coming in at 1-2% for the Jan-March calendar year."

The latest NPD data has some interesting stats about the current state of online music and where we as consumers are buying it from.  Still top is iTunes with a market leading 69.9% followed by Amazon with 11.6%.  This is obviously quite a gap and Apple have really cornered the online music store market up to now making it difficult for others to get as much market share. However, according to the NPD data this seems to be changing as Android devices become more popular.  Amazon have a tie in with Android which sees the Amazon MP3 store featured on new Android devices which may be why their market share has increased by 4% last year, compared with iTunes at 1%.  Which makes me wonder, does the device you use to listen to music influence where you buy your music, or is it simply that there is more choice now compared with when iTunes exploded on to the market?