Which processor is bette for FSX?

E6750
or
Q6600
I'm just buying this computer mostly for FSX, Pro/E, Catia, and Solidworks. Mostly FSX. And I plan on sticking with this system for awhile(like when FS11 comes out
) Sorry for the stupid question. 
or
Q6600
I'm just buying this computer mostly for FSX, Pro/E, Catia, and Solidworks. Mostly FSX. And I plan on sticking with this system for awhile(like when FS11 comes out

