I have not used these particular Michelin Latitude winter tires before. I currently have Michelin Alpin winters for another vehicle. I have had previous winter tires from Continental, Toyo, Bridgestone Blizzak. Between all the winter tires and summer tires, I prefer Michelin tires for overall performance and lower tire noise.
The 18" with lower profile (60 series vs 45 series) has a narrower tread... YES, better in the snow.
If tires are NOT directional, I would rotate left/right (reverse tire rotation) to even out tread block wear for less road noise.