I've checked out the Magnum synthetic. Its basically a repackaged QF. The only difference is the temp strip on the Mag is located on the center of the bottle versus the near-bottom for the QF. Also, the Mag only comes with a flip-squirt top, which can be unscrewed to pour, if desired.

For peace of mind, you can run a test on the Mag at home to ensure that the pH, creatinine, and specific gravity are all acceptable. These tests are available online by doing a search for drug adulteration test kits on google.com