My daughters car came with Kumho tires. So far, so good but she only has about 6k miles on them. The wife's car came with Hankook tires and she has close to 43k on them and they are doing great, we're hoping to get 50k out of them. They are quiet, have excellent grip in wet or dry and very predictable handling. We do check the air pressure monthly and rotate them every 5k miles like clockwork. All in all, we are very impressed with them for an OEM tire. And I'm a dyed in the wool Michelin fan.
Can't help you on the snow part. Sorry!