I think KARA, SNSD, and the Wonder Girls are all great groups. I wish there wouldn't be any competition between them, but of course there is :/ But with competition, I'm always seeing people saying rude things like "Wonder girls are prettier," "SNSD can singer better," on KARA videos, blogs, threads, etc. I personally think all three groups are on the same singing level and they're all equally as pretty.
I love KARA's bubbly image, it's really fresh and unique. It's different from SNSD's and Wonder Girls' images.