[joyridin']

The H beam is a lot harder to make than the I beam. I have a customer than manufactures both. The time on an I beam is probably 1/3 less than the H beam, and you can use somewhat generic tooling. The chances of a mistake on the I beam are a lot less also due to chip evacuation and trying to hold wall thickness on the H beam.

Are they worth the extra money? From a machining aspect alone, yes. They do cost a lot more to manufacture. From a performance standpoint? Like everything else, it depends on what you are using them for.