as I don't live in your area I cannot make a recommendation. however, I have been around the world three times on a transmission deal and I can offer this advise. Start by checking the better business bureau for any complaints. Second, ask for three references of customers they have done work for. Third, ask if they have ANY FORMAL TRAINING/Certification on Mercedes-Benz automobiles. ASE certification isn't enough, have they been to school on Mercedes-Benz automobiles? Do they replace parts with OEM Mercedes parts (updated) or do they pry parts off a junker in the back and slap them on the car. Do they have the computer software to diagnose the newer mercedes benz models? There are a lot of people more than willing to take your money, be careful who you give it to.