The ultimate goal of your business card's design is to make the recipient contact and remember you.
The art of designing a successful card is ensuring the contact details are perfectly legible. The rest of the design can be tailored to the message you're attempting to get across.
Sometimes simplicity can be the key, as it has an air of professionalism, but if you need to tell people you're a young, fresh and innovative company then you are going to need a funkier design.