They are great pans. I've found it is almost impossible to lose gold with those deep riffles and I've collected plenty of gold from the tailings of other pans. I don't need to classify my material as much and I am finding bigger gold as a result. I do find it quicker and easier to clean up concentrate in my old 10" pan so even if you have a favourite pan already I would recommend getting one to do the bulk of the work.