I like the Warm & Natural too. I was given a queen size Quilter's Dream and used it for a gift. I liked it too. I'd like to try the Mountain Mist Blue Ribbon cotton, but can't get it locally, so I'll have to start looking online.
Be sure whatever you use that you watch for how close to quilt it. I see in my search the Mountain Mist is every 2", and I think the Warm & Natural is every 8". It might make a difference which you choose based on how you like to quilt.