I can tell you the DNA test kit seems pretty good, I have known a few people that got it done -
One customer in particular adopted his dog from a rescue and everyone always asked what breed, so he got fed up lol and ordered a kit. He asked us what we thought - and 3 of us Dog Groomers agreed he looked like a Black Cocka-poo. The test he got was $80. The results came back, part Poodle, Cocker, and some Springer! (I chalk up the springer to the cocker side - I've heard of some lame cocker breeders mixing in a smaller springer with the cocker bloodlines to get the black & white variety).
The company he used also did the test totally blind, no pictures or other info given.