You have some nonexistent CPU model numbers up there. What are the actual laptops you are looking at? If you want good multitasking, then get a "QM" processor. HD 3000 gfx is good enough if you wont be using much 3d applications.
Well, I'm looking at a Dell E6520, and the processors are listed as: Intel Core i7-2720QM processor (2.20 GHz with Turbo Boost 2.0 up to 3.30 GHz), or Intel Dual Core i5-2520M, 2.50GHz, 1066MHz 3M L2 Cache, or Intel Core i7-2620M processor (2.70 GHz with Turbo Boost 2.0 up to 3.40 GHz). Sorry if I didn't provide enough info.
So there is no benefit to getting the Nvidia gpu unless I'm doing 3d?