I had issues with my engine using more and more oil over the last year. I kept detailed records and was able to provide a detailed spreadsheet to Cirrus. They and my shop determined that Continental would have to get involved. Continental and Cirrus were less than responsive and it took multiple communications to get them to respond. Then Continental’s response was inadequate (because they clearly didn’t read the data I provided). More communications and finally a response from Cirrus saying they can’t help much since it’s a continental issue. I balked and they then were able to get someone else at Continental to respond. From that point the service was excellent and they made up for it (except for a maintenance issue where Continental didn’t connect my TKS line to my prop after the repair). So my one experience with Continental was poor at the beginning and then excellent. Your mileage may vary.