I think they are very similar except for size. I have the CFF5 model and it requires a lot of chocolate to have it flow nicely. I am thinking of purchasing the CFF4 so I don't have as much wasted chocolate.
Some compounds of californium: CfF3, CfF4, CfCl2, CfCl3, CfBr3, CfI2, CfI3, CfO2, Cf2O3
Some compounds of californium: CfF3, CfF4, CfCl2, CfCl3, CfBr3, CfI2, CfI3, CfO2, Cf2O3
Some compounds of californium: CfF3, CfF4, CfCl2, CfCl3, CfBr3, CfI2, CfI3, CfO2, Cf2O3