The best benefit about a bob layered haircut is how it looks beautiful both for curly and straight hair. When you have straight hair, you will get the "Egyptian" look with a round sexy hair with bangs and curved edges. With curly and wavy hair, you will get a playful fun young look like Rihanna with her famous short bob hairstyle. It gives you a more carefree and playful look that many guys admire and find attractive.
So, it is very important to choose the right type of hairstyle after making proper research. If you are young and trendy, you might also like to experiment new hairstyles. However, try to get a computerized image of yours with that hairstyle before trying it. And try to take suggestions from friends and relatives as they might give a good idea on whether the particular hairstyle would suit you or not.