I'm really having a tough time deciding between these two. The refurbished Black MB is $1099, while the new 2.0Ghz MB is $1250 after the student discount. What is the better buy if I'm not a gamer? I'm losing .4Ghz and 90GB of hard drive space in return for the newer design. The price difference is only $150. Will the non-3D performance be about the same, or will the 2.4Ghz still have some advantage?