The original will only end up in your Growroom if someone gives you a cutting, there are no seeds for Cheese, it is a clone that has been passed around for years!!
All the others that you can buy seed for are crosses, Blue Cheese, BB Cheese, Cheesewreck etc etc are crosses with an original female cheese!!
Which ones are the best is a difficult one to answer, BB Cheese is supposed to be the closest as it is crossed with Skunk #1 which is the original strain that produced the Cheese, but at the end of the day, none of them are the Original Cheese!!
If growing from seeds, take a look at what the cheese is crossed with and pick from that, I am currently growing the Blue Cheese, a cross between Cheese and Blueberry!! Definatly like the sound of that!