Heh, The Xbox is a networked Game machine and a HES (Home Entertainment System) in one. You do have to MOD it though, and that voids the warranty, like MS were ever gonna honour that
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Once you get XBconnect and Halo, you will play no other FPS online game, yes I said ONLINE!!! XBConnect will let you "link" over the web!
Xbox has more bang for the $, it costs the same now as a GeForce3 did when it came out. PS3 is so far away SONY are introducing a PS2.5 - WTF?? Its got all the networking capabilities of a PC without the hassle of upgrades. For 150$ you have a WAN capable games machine that ALL titles available will play on without the worry of hardware upgrades (my biggest gripe with PC's).
PS: Just got Yager, and it rocks on the same league as Starlancer. If I only have two or three games that I play regularly online until Halo 2 comes out I will have saved $ over a PC.