Laptops: Apple or Window's based?

I have deciede that its time to upgrade the computer, and have decieded to purchase a laptop. However, I have run into a problem, I have no idea how much "power" I need, and am also wondering about the positives and negatives of the Apple's. Use will be the typical internet surfing, photo editing, maybe some video editing and definately for music. Any recommendations from other users would help me out a great deal. Thanks in advance.