Entry #3, the black and white logo is our favorite so far. Seems to be modern, premium and adult.
We like the font of Entry #4. The polar bear makes it seem less adult. This product will mainly be used by adults so we want to stay away from anything that makes it seem more child like.
The fonts for entries #6, #7 and #5 definitely go into the less serious area and less premium.
The Pure Chill tagline seems to work well in entry #3, but not as well in the other designs.