I only own one club collar, or golf collar, shirt and it has quickly risen through the ranks of my wardrobe. It's a damn sharp camel colored Black Fleece number, which happens to look great with any and all neckwear. When you wear a button down shirt practically everyday, like myself, something like a club collar is an easy way to switch things up to add a little punch to what can become a tad monotonous (I feel the same way about Steven Alan reverse seam shirts). A combination as simple as a club collar and a cool tie or bowtie you can easily be "that guy" who dresses really well. It should also be noted how great the club collar looks with a collar pin. The roundness of the collar offset by the straight line of the pin creates an eye pleasing juxtaposition.
Something so easy that can make such an impression is a can't miss and the club collared shirt surely makes an impression. I'd like to add a few more to my closet for both casual and professional wear and I am pretty sold on going with some more Black Fleece (see first picture). The shirt is a little on the expensive side but its details like mother of pearl buttons, back tab and pointed placket make you feel better about having a thin wallet. Here's a few examples of how and what to wear (click through links where applicable).
-L.A.S