I believe that the original poster just wanted to know what was the difference between reputable vs ebay brands. How did this turn into a form and function tutorial? Not all kits perform the same way. Not all use quality material. Usually the saying" you get what you pay for" applys in this situation. Do your research, there has been many post that discussed this topic.

 

Arguing online is like running in the special olympics, you may even win but your still a retard. No offense to "special" people... I like the doors but I do see quality differences in them. Everyone says what doors to go with, vert, but no one said if they have them and where to get them...