Premium quality Production: 
* The best of the best
* Featuring the best porn stars
* Excellent sound and picture quality
* Excellent bonus material on most titles

Good quality Production: 
* Recent to new releases
* A mixture of the best and up and coming porn stars
* Good picture and sound quality
* Bonus and extra material on most titles

Medium quality Production: 
* Value for money productions
* Many special genders
* Often compilations with long running time
* Limited extra material and special features

Budget quality Production: 
* Mostly older productions and compilations
* Many amateur porn "stars"
* Limited extra features
* Good for a cheep thrill