From what I have read, they are equally good products. I personally went with Hughes. No particular reason, except that I had their site saved in my "favorites" and it was easy to get to. I also ordered the gaskets from them. They were Fel-Pro and can be purchased at any local auto parts store. I will say that the customer service was excellent, as was the product. I had a positive enough experience that I recently placed a $3K+ order with them.