well, for my persona experience ive done surgery in canada, us, australia and bangkok. My results weren't ideal to say the least. In the US i got botched up. In bangkok i got botched too. Only the koreans managed to fix the damage done.
secondly, korea's medical beauty industry is far more developed by the government. The country performs more plastic surgery than any other country in the world. Technology is first class and surgeons do far more procedures per day than others. At many of the clinics/hospitals which are mid sized and above, there are 5 surgeons usually. Each with their own speciality and they cannot act outside of their speciality according to the clinic's protocol. This means on days which they are booked up for surgery, starting from 10am to 5pm they are constantly honing their skills in speciality. The more surgeries a surgeon does, generally speaking their skill level improves. However, if I am being impartial, the large hospitals/clinics in korea to fill up their sheer volume of patients, hire junior doctors to do meet this demand. That's what I know from working in the industry in Korea. Thats why I never did my surgeries at large clinics, only the smaller ones (i had my 3rd nose revision done in a clinic with 2 surgeons only, and they only do nose surgery since thats their speciality) and the medium sized ones. You can do your own research on this or even visit korea. There's 2 main areas with hundreds of clinics for dermatology and plastic surgery all jammed into the district. There are statistics you can find out with research too. I think I came across a census that showed over 50 percent of the population have had some kind of cosmetic enhancement. Its very interesting because I will always remember the first timewhen I walked past an elementary school near the clinic I used to work at, I could see the difference between what the kids look like, and what the adults look like. I thought to myself "ohhh so this is what the koreans really look like before they enhance their features" haha
These are some of the reasons why despite prices not being cheap, people flock to korea for plastic surgery. In the US and Australia and Canada, the systematic approach is not there. There's usually one surgeon per clinic and that surgeon does everything - eyes nose breast etc. I use the logic of jack of all trades master of none. Im sure people get good results too however but I personally didn't and wouldn't ever do surgery unless its with a surgeon who only practices his speciality.
Also, I don't believe Korea is good for body procedures like the butt lift or tracheal shave or srs. I consulted a couple of surgeons and wasn't too impressed. For example, the butt lift all of them I consulted with said "fat graft method is not good because it doesn't last long. Silicone is preferred" But then I asked 4 of the surgeons I know personally and all 3 of them advised me against using silicone because of the high infection rate, citing between 10-30 percent. The surgeon I consulted for the tracheal shave said the only way to do the procedure is via an incision down the middle of where the adam's apple is. He said there's no other method. But the Thai surgeons I spoke to said they would do it from the under chin area, as did the facial team.
So for facial work I would only go to Korea for it. But for my body work and tracheal shave I'm considering Brazil for the butt lift, ideally facial team for my adam's apple and srs I haven't decided yet. That one is the biggest decision for me.