Pros : Easy to use, durable, versatile.
Cons : None that I've found.
Other Thoughts : Love this mold so much, I bought some of the other shapes. Be sure to read the thinfire weight fill information, too, so you can maximize this mold's range of thicknesses. I use MR-47 with this (and the other similar molds) and have had no issues with spurs or sticking.