How do you know youve got the right channel list and firmware?

Hi,

I was wondering how you identify which channel list is the right one- I have noticed that AJs channel list has 4 different types at present the first one out of the four has the most views so im assuming this is the most popular one? Do I want SD im not sure- why wouldnt I?

AJ's List 28-2-14.zip

AJ's List 28-2-14 (No Adult).zip

AJ's List 28-2-14 (With SD).zip

AJ's List 28-2-14 (With SD) (No Adult).zip

I am also wondering what firmware is the right one for the skybox f5s I downloaded this one from the skybox.cc-2014/01/22 SKYBOX F3S F5S 140122 but when I compare it to the one on the tech kings website the numbering is not the same?

Thanks for the help folks.