I've finally made it to the bottom of my first and only toner bottle, which is the Selenium toner from Ilford. I've been satisfied with it mostly, and use it on Ilford's warm tone rc and fb papers. It's an easy to use toner and the results can be seen in 30 seconds or so which I like. The only problem I've had is with a purple cast if I tone for too long.
This is a good time for me to try something different, so if you have a toner that helps with archival concerns and adds depth to the dark values without adding much color I'd enjoy hearing about it.
Thanks!
Jeff