Still can't decide between the AMD or Intel builds.
Get the Intel 2500k build, AMD FX8120 is good for highly parallel programs that utilizes multicores to the extreme. Unfortunately, gaming, wording, browsing and general usage does not fall into this category and thus the i5 2500k will dominate entirely. Build him an i5 2500k build or i5 3570k build, his friend with FX8120 will drop his jaw looking at the sheer power of the the i5 in gaming and general usage. This is of course the rest of the components (video cards, SSD if any) is equivalent to the FX 8120 build.