A couple more points about Gold Toner occurred to me during the drive home from work this evening. Gold Toner is said to be as archival as Selenium toner. Like Selenium a relatively quick dunk does the archival bit without any noticeable image colour change. Longer immersion gives the cold blue tone, but the shade of blue given changes with successive prints treated. After two or three uses it provides, to my eyes, a much more pleasant blue. Lastly it keeps well, provided it is not contaminated, although it doesnt have the capacity of other toners. Having said all that I must confess that I have only used Tetenals product. Hope that adds to the debate?