The word that comes to mind when describing M&M is "integrity". I recently took my father-in-law's 15 year old VW Passat to M&M for a thorough check-up. With a car that old, you can imagine what they could have "found wrong". However, after giving the car a thorough review, the M&M team informed me that the car is in "excellent condition", only needing new wipers.
I was delighted to hear that the car is in great shape, and even more delighted with the honesty and professionalism of the guys at M&M.