Generally, a foil electric shaver is more comfortable for sensitive skin than a rotary one, as it shouldn't pull out hairs and gives you a closer shave (unless you like to let your facial hair grow for a few days before shaving - in that case you may do better with a rotary, but be aware it can pull the hairs.
If you put the words 'best electronic razor sensitive skin' in a search engine you will get links to different reviews and information sites. There is an informative list here - as you can see, a lot of the top models shown are rotary, but the Vortex Nano wet/dry shaver is a foil version that has very good reviews, and a wet/dry shaver is also a very good idea if you have sensitive skin. On the same page you can also do a further search, setting your price range or any other criteria that are important to you, so you should be able to find some good options from this page alone.