Your circumstances will dictate whether you choose a secured or unsecured loan. If you don't have any security items, such as a home or a vehicle, an unsecured loan may be your only option.
However, if you are not in a hurry for the money and would prefer a better interest rate, you should look into secured loans. Just keep in mind that you'll need to be very careful to make all of your payments on time, because if you don't, your security item could be jeopardized.