Some time ago I reviewed the Remington Pearl Wand (click here to view!). Around the same time as I bought the Remington Pearl, I was so impressed by it that I ran out and got its chunkier counterpart too, the Pro Curl.
I suppose it gives a nice tousled look, but I was expecting more of a curl, or even big waves. But it really doesn't impress me. The skinnier wand is a much better hair tool, and you could even use thicker sections of hair to create loose curls or waves and it would give a much nicer effect than this fat wand.
So if you are trying to decide which Remington Pearl wand to get, I couldn't recommend the skinny wand highly enough! I also think that you could easily recreate the look that the Pro Curl wand gave me even without putting heat on your hair.