I initially bought the 2" version, but as soon as I took a look at it I knew it was too big, so I sent it back for the 1 1/2" and the size is perfect for getting nice big, soft mermaid waves.  I love that it gets really hot, really fast.  I've had problems in the past with other curling and flat irons not getting really hot or only for a couple weeks of use, but that's not the case here.  This gets my thick coarse hair smooth and shiny as silk, and never sticks or snags.  I would definitely buy it again.