Thanks for undergoing this ABX test, Marv! I don't see any issues with the test setup. I will have to disagree with those who think that the "Abort" choice is a good . If the "Abort" was a non-biased choice, then yes, it is a useful choice, especially for problems with the test setup. However, if the tester only chooses ABORT when they cannot tell the difference between the 2 selections, then "Abort" creates a severe bias away from the null hypothesis. As I read the progress of Marv going through the trouble of this test, I think only #10 is a neutral use of the "Abort" choice. #10 had issues with the test setup and so the abort was warranted. In test #3, 7, and 11, Marv aborts when he can't tell a difference, which would definitely bias the test against the null hypothesis.