I have found that rinsing with water is quick and easy, but water has its risks. One, the cutters are made of steel and water can corrode them (rust or mineral deposits). Two, water could possibly leak into the electrical part of the shaver. A good brushing with an old toothbrush, plus occasional alcohol cleaning, and spray lubricant or light oil will preserve shavers. I find the foil shavers take more time to clean than rotary shavers, but they give a slightly closer shave.
Guess I'll hold on to my first gen Magic keyboard and mouse rather than the inconvenience of recharging, waiting, and throwing out a less-than-friendly keyboard/mouse set. But i guess if it lasts 3-5 years that's all we can expect. I still prefer consumer-friendly devices though so I'll hold onto my first gen devices as long as I can.