[xactly]

I'v been looking and i can't find any info on which is the most highest quality lead connection for xbox 360 (excluding HDMI):

This is a contest between VGA vs S-Video vs AV.

I am planning to buy a 360 for christmas and i wish to get the highest quality out of it with the 3 stated connections.

[alex]

It's not necessarily the lead you want to be thinking about (although I'd go VGA) its more the unit you're outputting to.

The more pixels the better the picture and the xbox can display upto true hd, as in 1920x1080 progressive.

The VGA can't display less than 60hz though so if you're playing old xbox games on your 360 you won't be able to with the VGA cable but will with the AV.

[xactly]

this (apparently) is my monitor a tiny 17inch and this Leadttek WInfast DTV1000T is my TV Card it has a S-Video and CVBS Connection these are the only ways to connect the xbox 360 to my PC.

I want to get the highest quality squeezed out of it i will be using my older xbox games like HALO and HALO 2 and 360's HALO 3 so i want to know whats the highest quality lead.