Well, I would recommend purchasing electric shaver products manufactured by Braun because they offer a variety of products and services. They also offer their products and services for an incredibly reasonable price.
The best electric shaver to buy is at amazon.com where you can buy the Panasonic ES8243A Men's 4-Blade and you would have the World's best electric shaver.
If you want to purchase a decent electric shaver, you need to outlay at least $100. You can buy one for less, but as it's something you'll be using nearly everyday, it's best to pay premium for quality.
You do not want to sharpen any shaver, instead buy a new shaver head.
One can buy a replacement Braun foil for an electric shaver on Amazon or Ebay. Here one can either bid in an auction or buy the foil outright at very low prices.
It entirely depends on how sensitive or how rugged your skin is. Everyone prefers different electric shavers. Your best bet would to do research on the most sought after electric shavers.
Panasonic Pro-Curve ES8043SC Wet/Dry Electric Shaver is a nice choice
Yes, you can bring an electric shaver in your carry-on luggage.
Yes, you can bring an electric shaver in your hand luggage.
Yes, you can bring an electric shaver in your carry-on luggage.
Yes, you can bring an electric shaver on a plane in your carry-on luggage.
Yes, you can take an electric shaver on a plane in your carry-on luggage.
Yes, you can bring an electric shaver in your hand luggage.