Pros : full, mixable palate, if you can get them to work
Cons : I had a lot of problems with these burning off in the kiln, especially when I fired them above the suggested 1300 degrees. Its less of a problem where the paint is quite thick, but it will certainly look quite different after firing than before. The paints are quite thick and didn't really like being thinned with water or klyrfire, (in fact, almost completely burnt off when thinned) and i found getting even coverage to be very challenging.
Other Thoughts : I don't think I would buy these again.