If we are short of time to practice there or who does not know design, a good choice in terms of logos is LogoTemplater. A site in which banks offer logos in vector format Eps totally free, made with Adobe Illustrator and free to use for personal and commercial projects.

You can also change smoothly in the case of wish, but remember that generally is not permitted to sell or redistribute them as your own. The truth is that some of loslogos offered are really great, so it is an excellent opportunity for those who do not handle well the Illustrator.