Pros
This agency was the most professional I've dealt with in many years of working. They were respectful of my background, seemed responsive to my needs and even gave me a holiday gift card (something many even employers never did, much less a temp agency). I also never had issues with getting paid on time or when I was supposed to.
Cons
It seemed like in my assignment with them, there were way too many factors outside their control and they were partnered with someone extremely unprofessional.