I do not now, and I have never owned an iPod or Zune.
I’ve owned three MP3 players:
* the first was a POS $200+ hard disk based one I bought 4-5 years ago, of which the less is said the better.
* The favorite of my current pair is an off-brand (Truly, maybe?) player-in-a-memory stick which cost under $20. It takes an AAA battery and just plays MP3s in file name order without any fuss or bother.
* My less favored, but more frequently-used one, is a little Creative has (~$90 for 4gb a bit over a year ago, cheaper now)… it has a 2.5″ screen for video, FM radio and a rechargeable battery which are big pluses… but it is much more trouble to put music onto or to play anything in a desired order. It’s also got a non-replaceable battery, which pisses me off.
I keep hoping that battery life on my PDA/phones will improve to the point where it will not be necessary to have a separate MP3 player. Sadly, I see little improvement there, and my present phone (a new HTC Touch Pro) is something of a step backwards for music player use as they went from a semi-proprietary small headset plug to an entirely proprietary USB+sound+etc plug.
(Lest the basic reference not make sense)