Here is the issue you guys are going to run into when trying to get a free product for testing purposes. If you were an accredited source for testing, they might be more inclined to submit a sample for testing, but to be brutally honest here, you guys are just a few Joe's on a forum that are willing to try them out. I know that would be good for the other members to see a real world in car test, but it is highly unscientific and I would doubt that the MFG would like to see this type of unscientific testing published from a normal guy such as yourselves.
Now what they probably would rather see is a more scientific testing facility that had specialized testing equipment like the stuff MechMan has at his disposal at the PowerMaster facility. I doubt that Rob (DC) or Dom (Irragi) would submit their products to Matt for him to test though. I know I would not trust anything but an impartial 3rd party test.
If you still feel like doing the testing and cannot afford to buy them yourself, why don't you two guys simply swap alts for a week, that way both of you could try out the other brand and get some feedback from each other.