I'll leave the rest to the others, but regarding the WRC graphics I can comment. I got these done to be different, or to have my Impreza stand out from the crowd, as it is however, tons of people have them, so I will be looking to remove/change in due course. Fading occurs only with the Day-Glo vinyl, so avoid that like the plague. Also, the Day-Glo glue is stronger than regular vinyl and has been know to lift the laquer! I have been advised to use a special removal fluid.
HTH!