If you have thin facial hair just get a good quality rechargeable unit and use some of that white powder they sell to make it a smoother shave, and with less irritation. If you have thick facial hair you might have better luck with the disposable razors.
I tried all kinds of electrics with pretty lame results. The last 5 years I've just been getting some disposable that I use 3 or 4 times then throw out. I like these much much better than any electric I've used. They get closer and there's less irritation.