i'm sure both would do a good job - all trainers are certified animal trainers before they are hired. Furthermore, the sessions like are like once a week right? it's more of getting the concept down and training the pup urself - really depends on how much you work with the dog on ur own.
For a great DVD on how to train your dog, you should go to PetsIncredible.com! They are backed by the Humane Society and their videos are really wonderful! The videos are also cheap and go into great detail. Hope this helped!
I don't like either of them, myself. If you are lucky to get a trainer at one of them who's been through a certified behavioral program (San Francisco SPCA, for example) you're lucky.Try a local dog shelter, humane society, SPCA, dog training club, breed club or agility club. One of my agility instructors is a certified behaviorist (SFSPCA) who teaches for Sirius Dog Training. I've been very happy w/ their methods (positive reinforcement).Good luck.