You cant say (name a brand head) is better then (name another brand head) when you are talking about the front runners in head design. Trickflow, AFR, Brodix, Edelbrock, Cantfield are all excellent heads. There are a few out there that are sub par, such as procomp.
When comparing heads you have to look at their features not what brand they are. The Combustion chamber size, the valve size, exhaust valve size, is there any port work done, exc exc... Diffrent types of heads are built more for boost or more for NA so in that case a Trickflow head with a large combustion chamber is a better choice then a AFR with a smaller combustion chamber if its going on an engine with boost. I had AFR heads on mine that were built for boost and I took them off and replaced them with heads that are more suited for NA. It all depends on the application and the make up of the heads. Heads can be anywhere from mild to wild depending on the amount of work done to them. The heads in my sig cost as much a vortech set up but they have been heavly ported have larger valves, have an expensive valve spring kit and were custom built. It all depends on your combo and needs of the engine so its just not as simple as saying X brand heads are better then the other X brand heads.
