DVD Installation on a X5 2005 4.8is

[LABALAI]

Hello friends:

I will receive next month my new X5 2005 4.8is and I want to add a complete DVD solution. The best possible on the market (considering video quality and options)
I want to have the monitors in both headrest (Walknappa Schwarz=Black) and also have the option to see the same image in the front panel TV.

So, two questions:

1) what is the best option for DVD player (I want MP3 option) : manufacturer, prices?
2) It is possible to install the DVD and get the same image in the front panel, or it is only possible to get video for rear seat passengers?

What other things I need to consider.

Thanks a lot.