I, like all the others have tried different product lines, i think in all fairness, maybe an across the board price comparsion would be an better indictator. Compare the price of the 32 oz. of Griots speed shine with others in the same oz. range and see what the rest of the others are,etc.
All in all, it comes down to personal preference. As a side note, there are pricer items out there, as well as cheaper.
Thanks for the info.