Initially had a koolatron p75. It works well and fits almost flush level with the back seats. However I wanted a real freezer instead. Debated between the cfx-40w and the Engel mt45f-u1 and ultimately decided to pay a bit more for the Engel. It is narrower than the cfx-40w and a bit higher. It is a good armrest for the back seats. I will try and update when I've had it going for a bit. Engel is discontinuing this model for the identically sized platinum version with a bit more tech.