Newegg says the i5-760 is discontinued. Are you planning on getting it from amazon or something? But, since I have no knowledge of that CPU (other than just looking at the specs) I would have to defer to others here.
My new machine is running on the i5-3570k and I have to say that I'm VERY happy with it's performance (in game and out) thus far. From what I found when researching CPU's it seems that the i5-3570k is the favorite among many gamers for their machines, and considering the power you get for the price (around $219), I can't blame them.
So I would recommend the i5-3570k for a new gaming machine.