Fort Collins, CO
I was traveling through Denver and ended up having my 2005.0 Audi B6 S4 start running rough. I did a search on the Internet and found that Avalon had really good reviews. I also happened to be less than a mile from them.
So I decided to give them a call. I spoke to Brian, I believe, and he told me to limp the car over. The planets aligned and they happened to have the part I needed (a replacement coil pack), and they had time between other jobs. I was back on the road within an hour, for only $75 bucks.
I was super happy with them, I would highly recommend them.