Aside from the clear disadvantage of spending more, new remotes may require a complete reprogramming of your car's electronic entrance system. Remotes also go out of style, meaning you may have to settle for a two button fob when your car has a three button version, or you could end up with extra buttons that do nothing but add complexity without function. Of course, you don't have to get the same boring, black remote you currently have if you plan to exchange your case. Many cases are available in a rainbow of colors, making them easier to find in low light conditions, and a bit more fun as well. Toss your keys on the table with everyone else at a gathering, and you won't have any trouble telling which are yours.