I've been shaving since I was 15 or 16, but I'm 27 now, so it's a little tough to remember.
I can tell you this: I started growing my moustache around that time, and I'd let it grow for a couple of weeks, then shave it, grow and shave, and so on. Personally, I think that helps it come in better faster.
Unlike the other guys, I've used an electric for a long time. However, I have dry skin, and that makes a big difference. I used to get monstrous razor burn when I shaved with a regular razor. Now, I never get it. The regular razor still gives a better shave, no matter what. The electric just saves time.
I will say this: be prepared for the pics of the pseudo moustache to come back to haunt you! My parents just unearthed some pictures of me from that era with a cheesy moustache, a mullet, and glasses. I was stylin', let me tell ya. Those pics convinced me to stick with my goatee and not go back to the greasy 'stache cruisin' in under the beak. LOL