Michelin Defender T & H or Defender 2 Tires?

It's time for new tires and I was going to get the Michelin Defender T & H, but I see that the Defender 2 supposedly gets a few more miles, but I don't see much about them online. I did read somewhere though that they have a B rating vs. an A for the T & H.

I'm in the Chicago area so handling in the snow is a big concern for me. Thanks for your thoughts, I appreciate them!