Shopping Online for Hitch Cargo Carriers

My family and I are planning a trip to the mountains this summer. We are very excited and have already started planning what we will need and how to get it there. We have a lot of stuff to get up there. So, I have been shopping online for hitch cargo carriers. I was thinking that we could put something like that on our SUV. We could fit quite a lot on there if we pack them properly. We are looking to see what different types there are and what will work for our car and all of our stuff.