Which Sharpener

[chris in mo]

I am looking to get a sharpener. I will be using it on a Benchmade 350, Emerson CQC-7 and a Spyderco. All have partial serrated blades except for the Spyderco which is fully serrated. Should I get the Spyderco Sharpmaker, or a Lansky system? What are the pro and cons of these two sharpeners? Thanks Chris in MO