Teaching My Son To Shave

My oldest son is 15 1/2 and he’ll be shaving sooner than later. This has actually been a topic of conversation for about a year now. When he was turning 14 he was showing signs of a mustache growing. It wasn’t much, as I’m sure is the case for most teen boys. Then last Christmas happened.
Both of my girls came out to spend Christmas with the family. While they were here, they tried convincing him to shave. He was having NO part of it. lol He has Robert Downy Jr. in his mind for what he’d like to look like, at least in regards to facial hair.

Spring forward to…spring and the boys stayed with Fred while I went on my work conference trip. My oldest daughter heard about it and begged me (not kidding, BEGGED me) to have him talk to Buddy about shaving. I’m not sure of the conversation, but he offered to show him how to shave. Needless to say, they haven’t talked about it again.

We went through the summer and I could see a change in him. He had more facial hair coming in, in random places. heh heh heh His cheeks would have one long hair here or there. His chin started growing some wild hairs, but none of it is full. I knew that he was starting to take what his sisters were suggesting to heart. He was considering shaving.

After school started next month he actually started talking more and more about shaving. I have no idea how to teach him to shave. I know that I’d probably like to start with an electric shaver. He can’t cut himself that way. He is also going through the acne stage and I think it would be really hard for him to shave with a manual shaver and have to miss the acne. He’ll grow out of this phase and then he can move to something manual. I think he can also get the shaving done a lot quicker with an electric shaver.

I’m planning on getting him one for Christmas, but I’m going to have to do some research. I mean, what’s two more months when he’s waited this long already? So here are a few I’ve found. Have you had experience with any of them?

I’ve heard that foil shavers are a good kind to choose. Maybe this Remington. It’s a foil shaver and has a flexible head. I think those two things would make it a good choice.
Remington F5790 Pivot & Flex Men's Rechargeable Cord/Cordless Foil Shaver with LED Power Gauge
or
Philips Norelco PT730/46 Shaver 3500
Then there’s the wet/dry option. Do I get him something he can use in the shower? Might be a good option. He can kill two birds with one stone!
Braun 3Series 340S-4 Wet & Dry Shave
or
Panasonic ES-RF31-S 4 Blade Men's Electric Razor Wet/Dry with Flexible Pivoting Head
And yes, I’m looking at having manual shavers because they will be good to have as a back up and just to have on hand. I’m thinking a manual shaver would be similar to to something I’d use…on my legs? Making sure that it pivots and is good for sensitive skin. I know that Fred has the Gillette Fusion:
Gillette Fusion Proglide Manual Men's Razor With Flexball Handle Technology
or
BIC Flex4 Disposable Four Blade Shaver

So, do you have any tips on teaching my son to shave? Would you start with an electric or manual shaver?