If you already have stones, you might want to look at the clamp devices offered by Razor Edge Systems.
There is a very nice FAQ on sharpening in the FAQ/KnowledgeBase section here at bladeforums.com.
I won't claim that it's the best since that turns into a religious argument for some people, but I will say that I, myself, have a Gatco Edgemate system (very similar to Lansky) and I think I get very good results with it, certainly good enough for my needs. Unfortunately, Gatco doesn't yet have a website, so I can't point you to 'em.
I hear good things about the Sharpmaker 204 as well (Gatco and several others offer similar products). A lot of folks seem to talk about it more for touching up an edge that's basically ok. I have the optional "Ultra Fine" hone for my Gatco system and I find that very often all I need to do is make a dozen or so passes on each side of the blade with that ultra fine hone and my edge is back to spec. I've got to admit that it's a bit of a bear to haul out that whole Edgemate thing, set it all up, clamp the blade, oil the stone, and then take everything down, clean everything up, and put everything away just to make two dozen strokes. So, in that respect, something like the 204 which can be set up in less than a minute, done in less than a minute, taken down and put away in less than a minute, and doesn't require messy oil etc. may be very useful.
Regardless of what tool you use, the keys to sharpening are not magic mantras but 1) understanding what's physically happening. The aforementioned FAQ is a great resource for this. And 2) practice with whatever tool /system you choose. I have not seen any system that removes the elements of "touch" and "feel" from the process. Those are gained by practice and experience.
There are lots of systems on the market, Most any of teh recognized "good" ones, the 204, Lansky, Gatco, Razor Edge Systems, as well as the "traditional" time-tested methods of free hand on Arkansas stones, will give you a razor-sharp knife if you understand what you're doing and practice a bit.
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Chuck
Balisongs -- because it don't mean a thing if it ain't got that swing!
http://www.balisongcollector.com