Personally i'd go with the i5 if you're not going to do heavy multitasking or other things that will heavily use all 4 cores at once. I'm a long time AMD supporter, still am. But the i3/i5/i7 series as it stands just does far more per clock than the Phenom II series. Part of why my new system is Dual Hex-Core Xeons over my originally planned Phenom II 1090T(or better)