FilaBrasileiro on 23 June 2008
The 360 has enough console exclusive games to be worth it without the need for online, however Live is the best Online gaming service available right now, you'd really be missing out on one of the 360's best assets, unless you don't have the money or consider it morally wrong to pay for online or have another reason, I suggest you use it, or at least pick up the 30 day free trial.
