I've been rocking parties with Rock Band 2 on my PS3 for over a year now. In all honesty, the online play doesn't matter if you have a full band at a party. All you end up doing is picking songs off your current list. That being said, download a good variety of additional songs to make everyone happy. I feel like Guitar Hero is too limiting when it comes to that variety. I have everything from country (Toby Keith) to Emo/Alternative (All American Rejects) along with all your classic rock and hair bands.