My issue with most of the posts is this. If a company or its dealers are going to broadcast results from a test to aid in the sale of a product the test needs to be fair and standardized. Replacing old worn out brand x wires with new brand y wires and seeing an improvement proves NOTHING. It is not a fair test of performance. Now if one did back to back tests in the same conditions, changing only from brand x new wires to brand y new wires then one could use those results to show improvement. This is where some of the testimonials written would get dismissed or questioned.