Some of you must be into knife sharpening, right?

I'm thinking about replacing my tired Spyderco sharpening kit. The Ruixin 008 looks like a really good deal, but I wouldn't really know. What kind of problems would a newbie run into using such a kit? I have some Henckel knives, plus the usual assortment of pocket knives. The only tricky one is a Shun knife, which supposedly has a different angle.

I'd love to hear your thoughts about sharpening kits for someone who just wants to cook and open packages.