What is the best electric shaver for men?

[mo]

The shavers Bill has had in the past just doesn't come up to his standard., so I have decided to buy him a new one for Christmas, but being a woman, I have no idea what to look for.
Bill did say he would like to try the ones with the three rotery blades.
Can any of you clean shaven men tell me what they think is a good buy for an electric razor.
I am happy to go over the £100

[DaisyB]

Dave has only shaved once since we've been together.

[Rowan]

Mine has wet shave - has had electric ones in the past but he doesn't think they do the job.