Well, I think there is only one system that is literally made for your needs, it is the Spyderco Sharpmaker, which really should be called the Sharpkeeper. Once you have the right edge angle set, anything less or equal to 20 dps, your touch up takes seconds. You can leave it on the countertops, it is small enough and not too ugly. You leave the rods in, it is ready to go any time. Even for camping or traveling, it is light enough (maybe for backpacking a bit bulky) and you only need a flat surface => ready to go. You read a lot about the sharpmaker here on the forum and the biggest critic is the slow reprofiling ability. Sure, that is what it was not invented for. Reprofile your knife on a coarse Crystalone or diamond stone to an edge less than 20 dps, produce a burr, use the Sharpmaker from then on and you will never look back. I love freehand sharpening, no doubt, but this device is well made and thought out.