Polycarbonate is very difficult to get to stick to the printbed. I have to use a glue stick even with the bed at 100C. I print the PC at 280C and it does pretty well. I dry out the filament for a few hours before I print with it (just like nylon) or else it has too much moisture and the layers do not adhere well. Other than that, it's able to produce nice quality prints. It's just more difficult to get to work correctly.