Tom is correct in saying most are made by the same company. It depends on if you are looking for "daily driver" or "concourse" quality. If you are looking for "concourse" I recommend you stick with the higher quality carpet sets from companies like ACC. It will only cost you $50-60 more for the higher quality sets.
I installed a generic carpet set (like the one from CI) that I purchased from the local Camaro supplier to save shipping/handling from the mail order guys. It looks okay but the when I compare it to nice cars at the T/A Nationals, I can see that it is not of the same quality.
