I called John on a New Years Day to discuss installing a Viper Remote Start System in my 2010 Lexus. He had an opening the next morning and told me it would take half a day to install and cost $375.
After dropping my car off I received a call about an hour later informing that he misquoted the price of the additional part that was required in order to have the system operate properly on my Lexus. it was an additional $75. Now obviously this didn't make me happy but John was quick to admit his mistake (which I believe was an honest one) and split the difference with me.
My car was done in a timely manner and the Viper system works perfectly. My car doesn't even look like it was worked on, meaning it was returned to me in the condition I dropped it off.
I recommend these guys simply from the stand point of customer service. While a mistake was made on their behalf, they admitted it and resolved it to my satisfaction. Most places would just say it is what it is and give you the option to take your business elsewhere.