PS2 vs. XBox backups

[Arbanak]

I want to get my kids a console gaming system for Christmas. One factor in my decision as to whether to get a PS2 or an XBox is whether it is possible to easily make backups of games. I have a Pioneer DVD-RW drive in my computer. Will either the XBox or PS2 allow me to use backup copies of games without installing a mod chip?

If a mod chip is necessary for both systems, is one system substantially easier than the other to install a mod chip?

With or without a mod chip, will either system allow you to simply insert the backup disc and have the game start up without having to go through any additional steps?

Thanks.