Can I reuse old Satalite dish - DirecTV

I have an existing direct TV satalite dish on my roof from about 2011 and I cancelled direct tv service in 2014.
(1) If I sign up again for direct TV, will the installers reuse my satalite dish or will they put up a new satalite dish on my roof?
(2) Is there a difference in cost?
(3) Is there a difference in quality of the newer dishes?

This question, "Can I reuse old Satalite dish," is about DirecTV channels, programming, equipment, and sports.