Individuals and some harm reduction organizations tend to stress that brands/logos don't matter and pills with the same logo could still either be real or fake. While it is true that other manufacturers can make counterfeit ecstasy look the same as a well known good brand (Ex. White Sunflowers) there still may be ways to tell the pills apart. Minor details are important including the exact shape and size of the pills, splits, colours, speckled pills ect.
Pillreports.com is good for getting results of similar pills from your relative area and hearing comments from more users.
Im not saying that a pill testing kit isn't a good idea or that the risk of getting a fake of a good pills is slim, but pay attention to minor detail descriptions of the pills if you don't have access to a pill testing kit.

If you're getting multiple pills of the same imprint from the same source I would have to say that the chance of them all containing the same active ingredients in the same dosages is high.

If you were to send a tablet in for the testing service provided by Dancesafe or Ecstasy data you will not get in any trouble with law enforcement as it would defeat the purpous of a pill testing program. http://www.ecstasydata.org/send_tablet.php