This is getting pretty ridiculous, so I'm gonna simplify it for my own satisfaction.
Mp3 players are like...
Wait for it...
...you know what is coming...
...POKEMON!
That's right, mp3 players are like pokemon. Let's say that the operating system you use on your computer is a pokemon, and the mp3 player is it's special attack.
If you have a fire type pokemon use a fire type special attack, the power of the attack is higher than if say, a water type uses a fire attack.
Now, picture this. OSX is a water type pokemon. The iPod is Hydropump, a water type attack. Use it with OSX, and it's much more effective than it is if used with a fire type operating system, such as Windows XP. However, the Archos might be Fireblast, a fire type move. If you use it with OSX, a water type operating system, it's not going to be very effective! But use it with Windows XP and it burns the shit out of the competition!
Unlike pokemon, you can't try to have a balanced team here and use water types and fire types on the same team, it just won't work. If you think somebody is an idiot for using just fire types, or just water types, then you're nothing but a pokemon-racist and I would rather not associate with you!
Some people like using firetypes and incinerating things, quickly, efficiently.
Some people like using watertypes and going swimming. All relaxing and cool.