Im gonna buy a DC. But with or without MultiX chip???

[Jonny]

I'm planing to order a DC from a webpage, and they have a machine with a MultiX chip, and a cheaper machine without it.
Do I need this MultiX chip.. Or is the BootCD good enough ? Will I be able to play copied games without the BootCD if I have a MultiX chip, like the Playstation ???
What would you do ? Buy it with a MultiX chip, or without it (witch is a bit cheaper)..???
Please help me..? I am totally new it this DC scene....