Probably depends on your price point and application. If you are on a budget, and can't find a killer deal for an AMD, Intel is faster on the economy chip side. But if you are doing something multi thread intensive AMD has some well priced 6 and 8 core options. If you are planning on overclocking and gaming, Intel is the best with the 'K' series chips.
I love this answer, provides a reason why and states pros of both.
Anyways in my opinion, AMD is if you are tight with the money, and AMD wins most of the time with price/performance. Intel on the other hand is more powerful and more efficient but is a bit more pricier compared to AMD processors when not on sale.