Just got my A6 Leopard shift knob from twm performance and I must say thing thing is a beauty, a true work of art. It was available in a few different colors, but I decided to go with the most expensive shiny version that's called the Black Pearl. Love the way it fits in my hand, definitely worth the cost. I had considered getting it in gold, but I decided it was a little too powerful. If you're interested in seeing the other colors you can see them here:
www.twmperformance.com/a6-leopard-shift-knob
and let me know what you guys think of my knob!