What is the difference between them. like there is the xbox 360 pro and the xbox 360 arcade and the xbox 360 core and xbox 360 elite. so like what one to get.

I have recently decided to look into getting an xbox 360 . . .
But I have no idea which to get.
Xbox 360 arcade then 20gb hard drive £160
OR
xbox 360 Premium which is on offer with 60gb hard drive £190.

Which would be best ?

Also Is 20gb Hard drive enough ? Or would it be best to go with the 60gb ?

The XBOX 360 arcade was a gift, I enjoying playing it. But playing online sounds fun, I don’t mind buying and paying for the things i need to play it. But before I play it can anybody tell me what I need for this xbox live I am interested in? I know i need more memory right?

Well im going to buy a xbox 360 arcade, I just want to know if I could play all xbox 360 games on the system and does the xbox 360 arcade come with a memory card so I could save the games? And im not planning to play online, just play games on it

Okay so i have an Xbox 360 arcade. It does not have a hard drive only 256 mb memory card. Every time i connect my MP3 to it it only plays the first 5 seconds of the song then repeats the song.How can i get it to play the whole song especially when i play my video games? Please help thanks.