I have cars with both, but because I drive them and don't compete in judged shows, the ones that have repros are fine, and few the wiser. When the day comes when I begin selling them, I will try to apply as many original-spec parts (to include proper alternators, carbs, etc..) as $$ permit to keep the desirability among collectors as high as possible. So, I guess it depends on what your personal preferences are. Like everyone - I try to collect and keep original parts to this end, but I don't always install them on driven cars where they can be subject to wear & tear or etc... for the present moment.