I wouldn't go to South Korea because of one thing:
They do have a lot of experience with working on the bony tissue of female patients but not transgender patients.
Some time ago I had an online consultation with either ID or BK clinic (google them). Both of them recommended to fill the forehead with fat injections instead of working on the bone. As a result, this would make a forehead even larger and more protruding which isn't exactly what transgender patients look for.
There is (or was) a good explanation on this on Dr Bart's website.
Then there is the language problem. They say they speak English but in some of the videos on Youtube you can see the doctors who talk in English are actually reading a text in front of them.
Korean surgeons are awesome, I think, when it comes to the needs of Asian plastic surgery. As a transgender, I would rather go to Thailand, or to surgeons in the U.S. or in Europe. Despite the fact that they are more costly.
Besides of this, I do think they can create beautiful noses due to their aggressive techniques. They work a lot with cartilage which they harvest from the ear or rib for example to make the noses of their patients longer and more pointy. Many Asian women have flat noses with thick bulbous tips. I am half Asian, my nose is not flat but the tip is huuuuuuge.

But I'm gonna address this when I go to Spain for my FFS. I think they're pretty good with noses, too.