I agree with most of the other fellows, get the Spyderco product and also purchase a good strop or, better yet, make a few yourself. Make a few different sizes, some larger ones for the shop, and a few portable ones you can thrown in you trick or backpack. The cheapest strop you can use is a stout piece of cardboard or some heavy denim...
Personally, I use a rod smooth steel even more than a leather or canvas strop. If you steel after each use, the blade will remain razor sharp, and it doesn't take but a minute or less to do. If you are quite anal (as most sharpening and knife people are), use the blade, steel the edge, than strop it as a final touch. Steels come in all sizes, but make sure you get the smooth surfaced steel rod, NOT the steel with the grooves machined in. They can be brutal in the hands of less than an experienced sharpener...
Last word: I usually reform all my factory edged knives. I put on a nice convex edge using my shop belt sander. IMO,the convex edge is the best edge for any general purpose folding or fixed blade knife. Maintaining the edge is simple once the convex shape is in place, and the knife blade edge doesn't continually get fatter as you sharpen the blades after a few years of normal use or a few months of heavy use. A good smooth steel and a combo canvas/leather stripe is all you need to keep the knife sharp once you form the convex edge. No need to go in and take a lot more metal off the blade than necessary. Resharpening the blade suing any method removes way too much steel, IMO. It's better to reprofile the blade once and maintain the edge with a steel and strop. That's my 2 cents worth of opinion. It works for me and many others who use their blades often and somewhat hard. If you don't use a knife that often, than almost any good system will work for you. Just avoid the gimmick and electric sharpeners and you should be fine.....cya