For those who have played both systems, which do y'all prefer? The PS3 is $600 and the XBox 360 is $400 or $300 for the core system. It is just hard for me to justify paying $600 for a gaming system. Is the PS3 that much better or is it just vastly overpriced? And what is the difference between the XBox 360 and the XBox 360 core system? Any info y'all could share would be greatly appreciated. Thanks.