Im with Pat on this one. Jegs typically in their catalogs are more expensive #1.
Far as Summit and Jegs both go Im talking on the phone with techs that really dont care about anything other than selling you the part as fast as possible.

Now Competition products on the other hands IMO has more people who not just work in the performance industry but most of them indulge in the hobby as well. They are a smaller company, they take time to talk with you on the phone to help you get the correct product. When I was looking at Canfield heads the guy discussing heads spent at least 20 minutes on the phone giving me an education. Far as prices go, for the most part I think they beat Summit and jegs on most things.

So unlike Pat who is looking for volume discount...from a guy who just builds a motor every couple of years Competition products I believe is best