Carbide Create Machine Choice

Couple of question from an absolute newbie. Recently received my Longmill and I am trying to get my first job going by using either CAMLAB or Carbide Create. My very basic questions are which machine should I choose in carbide create for my Longmill? I have been choosing Shapeoko XXL. What type of files does CAMLAB and Carbide Create accept? I believe CL only accepts STL and CC Only accepts SVG and DXF, am I correct? Thanks for your help.