Did a Rooney before Rooney did. I was 21 and pretty bald (now 36) Always had thin hair so had average results. I travelled over to New York as the UK wasn't up to speed back then.
Good results from transplants are all about the hair quality and density from the back of your head. The result i had was ok and i stopped worrying about it. Due to the lack of donor hair, i couldn't have a second procedure as there wouldn't have been enough quality follicles.
At the time the most affordable option was a strip, which means they cut a slit from the back of my head and took the hair follicles off that. It leaves you with a pencil line scar at the back of your head. Unfortunately, over time, my skin stretched and left a big scar. I can't really shave my hair down less than a 4 without it being noticeable. Now that my crown has all but gone, i have to use concealer there which is brilliant at covering my bald crown.
I wanted to shave my hair off and looked into SMP (scalp micropigmentation) i had the procedure done into my scar in the hope i could shave shorter around the back and sides. It worked to some degree but it didn't turn out as good as i hoped. I complained and they offered the treatment all over my head for free. So, i took that option and under my existing hair, i had it done. It adds a bit more density and you see less scalp.
Looking back now, i wish SMP was available to me but i try not to let it get to me but sometimes it does.
if you like the shaved look i would certainly go down the SMP route. Do some youtubing and you will see some fantastic results. A friend of mine had it done and its great. Andros Towsend also had it done but then opted for a full-on hair transplant which looks fantastic.