I had one, in my twenties, don't regret it for a moment. It made a massive difference to my self-confidence. Not many people actually noticed; some people said I looked different somehow, was it a new hairstyle??
Mine was actually on the NHS, heaven knows how I swung that one (I did have to wait for two years after being referred, although ironically I ended up in a private hospital), so I can't offer any advice on choosing a surgeon.
There were plenty of discussions beforehand as to what changes I wanted - my nose was very "blobby" with a prominent bridge, and I just wanted it to look normal. The surgeon agreed to reshape the bridge and take some of the bulk out of the rest. He did a great job.
Immediately after the operation, my nostrils were packed with gauze, and it was quite alarming when this was removed the day after (think magician pulling scarves from a hat). Post-op, my face did ache, and there was a lot of swelling, which persisted for a few weeks (so don't judge the final effects too quickly). I had a "beak" which stayed on for 7-10 days, and spectacular black eyes which took a while to fade away (get some heavy-duty concealer for lingering bruises). I did everything I possibly could to avoid sneezing or blowing my nose for some weeks, and I was also ultra-paranoid that it would get a knock (so I avoided crowded bars/parties for ages afterwards). I also have a slightly numb end of nose, but this hasn't bothered me.