hello i would like to get some neon lights for under my car but i dont know too much about them, i know about street glow but one series says with built in transformer, and the gold series says out board trans former? whats the difference? is there ant difference in lighting performance? and i see the light glow kit that some one has on this site and it looks sweet but that is a led kit and his looks good but i ve seen other led ones that look like poo. please give me your insight or opinions about this. thanks alot.