Most k-pop sounds like western music tbh, but it doesn't mean it's bad.
SNSD is one of the most popular and talented girl groups in Korea, and they have some really amazing songs, for example:
Hyori lee has a really nice voice, the people she works with plagiarize songs left and right, but she still has a nice voice imo:
Wonder girls are probably the least talented girl group in Korea, but they do have a few catchy songs that I'd recommend:
4minute - they release VERY catchy songs.
KARA releases really catchy stuff too: