You will end up paying more if you want for the intel quadcores. Yorkfield will be launched in january with 3 releases. Follow the linkf or more info.
Choice is yours if you want to wait or not. But keep in mind, the future is multi core. I'd personally wait the two months, nab a quad They will release wolfdale processors as well. They will be cheaper dual cores if they stick with their pricing plans. But personally..I'd still just nab a quad and OC it a bit.
Hope this helps.