Compared to China, the streets are cleaner, the food safer and more healthier, and the transportation system much more efficient. Also, the Internet speed in the country is amazing: much faster than the Slowwwwwwww...speed in China. And, no blocking of YouTube, Twitter and Facebook (which is such a stupid thing to do).
Koreans are a proud and nationalistic people; much more so than the sometimes insecure Chinese--who like to kowtow towards Whites in the big cities like Shanghai, Beijing or Shenzhen. Of course, outside of the Westernized areas of China, Chinese don't like Westerners as much. I think the rise of Korea has led to Koreans being much more 'comfortable' in their skin, than Chinese people--who sometimes act as if their inferior to other races...Koreans outside of Seoul also do not 'White-worship' as much as most other Asians...(I like that!)
Korean culture also has much more respect in the culture than Chinese culture; Koreans treat each other with respect, unlike the Chinese, and Koreans see other overseas Koreans--even the ones who lost their culture and cannot speak the langauge--as still being 'one-of-us.' That feeling does not exist in China with overseas Chinese who come back to the country...
Koreans are also WAYYYYYYY more polite than Chinese people; it was a shock to see our well-behaved
I was surprised to see such tall men in S. Korea: I'm tall for an Asian myself (5'10/5'11) but I saw many guys taller than me. As for the females, I found South Korean women to be very overrated: they, for the most part, have the 'plastic surgery' look and the 'K-pop' look, which I don't find attractive. Chinese girls are MUCH prettier and more natural-looking than them...
Chinese girls have a much more varied body-type and facial features than Korean women. Not to say there aren't any naturally attractive Korean females, but I didn't see as many as I would've liked. There were some pretty-hot Korean females, though, especially outside of Seoul.
I visited Seoul, for a couple of days and, found the women to be a bit arrogant and materialistic. That's not surprising considering how 'Western' the capital city is. I did like the atmosphere of Itaewon, which is the nighclub/expat hangout in Korea. It's also the gay/lesbian/transvestite center in the country. I didn't like the "Hooker-Hill" area, though. I found it to be a disgusting place filled with run-down hookers and sleazy expats and American soldiers.
I liked the places outside of Seoul; especially Inchon, Suwon, Kwangju and Pusan. The women there seemed much less materialistic than the women in Seoul. They also seem more family-oriented than Western women. But it still concerning to see how so many young Korean women are becoming more feminist and 'anti-male' than the older generations.

Suwon is a really nice place: full of ancient forts, sightseeing and a nice, small--city feel. It also has a P4P scene and a Red-Light district--but they don't cater to non-Koreans. Interestingly, many Korean hoes do not associate with non-Korean/non-Asian men, because it is seen as 'shameful' for Korean women to do so...
I also like Inchon because of the close proximity to the sea and the small-big city feel. Same with Pusan and Kwangju.
I will post more--and even some pictures--in the future....