First, I have had great service from Ferrari of Austin. Kelly (Service Manager) and Carl (Service Technician) are great and know their stuff. They have handled a couple issues on my 2013 Italia very well and are just helpful in general.
Second, I have met one of the technicians at Lucas at a recent car show and he seemed like a good guy. He seemed to really care about the cars they service there. I've heard good things about Lucas from others in the local car community.
Finally, there's Colvin Automotive. I had them do a lot of regular maintenance and performance work on my 1991 Nissan 300 ZX TT and they did a great job. I know they work on the 308 GTS of one of the local FCA members.
FYI, some of us are meeting at Lucas in Cedar Park this coming Sunday at 9:15 prior to going to the Leander Car show. You might want to stop by if you have a chance and get to know some of the folks.