Lansky makes a good system. The diamond coated stones work best for putting on a quick edge. Unless you are re-profiling, you won't need the extra-course. If you mantain an edge, you probably won't need the course, as well.
DMT has a good system, as well.
The system voted the best, on a poll at [url]www.bladeforums.com[/url] is the Spyderco Sharpmaker. I highly recommend bladeforums.com for anything, edge related. There are guys over there, who's knowledge of anything blade related, far exceeds what you are likely to find here.
Also, I've heard that a lot of forged kitchen knives use a saw-toothed edge. If you use anything other than a steel for that type a edge, you will ruin it. Saw-toothed is not to be confused with serrated. The teeth cannot be seen wiyh the naked eye. All a steel is supposed to do, is align the teeth (through vibration, I think).
Hope this helps.