Here my use would favor the quad core. Other folk may use apps that would finish faster on dual core. Since it all comes down to the apps, that's what would make my decision.
It's tax time and my current notebook (inspiron 1521) is going away. The laptops I'm looking at vary only in processor type. I'm looking for a good "home use" laptop. I don't run any high-end games. I'm wondering should I get the higher clocked dual-core or the slower clocked quad-core?