Better at what? Gaming and general use? No. A 6 or 8 core processor will help not one bit.
Running a professional video and photo processing rig or running a large number of VMWare apps in a professional environment? Then maybe.
If time is money then by all means get the best. It will pay for it's self over time.
Or if you just have a need to have the biggest epeen and you have cash to throw away then by all means. Spend your cash on what you want.