Good thing to think about. I don't know why people say they plan on getting an MBA (the degree, not laptop) when they don't even know why they need it.
You need it to differentiate yourself from the rest of the pack. Where you get your MBA is more important than where you got your undergrad business degree. Why? Because a business degree is so generic that, in a sense, you could learn these generic business lessons at any university, and receive the same level of coverage. You're not really more suited to the fun, challenging, rewarding jobs, since everyone else is on the same level you are. With a good old bachelor's degree in business, the only thing that may differentiate you from the other graduates from your university, and from others is your natural talent for functioning in a business atmosphere, and your focus, determination, and hard work. That's all that will make you special. These aren't things you learnt in school.
If you want to make yourself stand out even more, you can show that you are academically more qualified for the good jobs by getting a good MBA from a good university. From what I have heard, the good schools will actually give you quite an incredible experience, and you will hone your skills and apply your knowledge. With regards to MBAs, each university WILL give you a very unique experience, and not a generic one. Of course, that depends on the university, and is why you shouldn't get it from an average university. Get it from a university with a great reputation for business. If you don't get into a good MBA program, then don't bother with an MBA and just work. Eventually, your chances of getting into an MBA program will be based on your work experience and what you have been doing in the business world rather than your previous education and grades.