They are not all the same. CC and AMN are referred to as the "evil empire" among travelers. For one list of ratings of various agencies, go to "Highway Hypodermics". There is a list of travel nurse companies that are rated by benefits/perks/etc using a "syringe" for every item. Ratings go from "21" (highest rating) to "1" (lowest rating). It doesn't cover all the agencies, but gives an idea as to what benefits/perks/etc. are offered/available by a lot of the agencies....and which are not. Also, not all benefits are important to every traveler. This way it was easier for me to determine which agencies I wanted to look into when I decided to return to traveling. It all comes out of one bill rate, and there is only so much of the "pie" that can be used for paying the travelers. That includes salary and benes, so know what is important to you in your situation. It can make a difference in your overall take home. Hope this helps!