I'm going to try and give you a detailed explanation of both choices.
INTEL PRO's:
1. Generally faster for gaming.
2. Lower electrical costs
3. Lower heat
INTEL CONS:
1. More expensive
2. Motherboard are also more expensive
AMD PRO's:
1. Cheaper
2. Very high overclocking abilities
AMD CON's:
1. Hotter
2. Higher electrical costs
3. Slightly lower amount of compatible coolers. (this may no longer be true, but amd sockets vary wildly and some coolers need adapters.)