Ditto: Mexicana and Aeromexico have always been outstanding on service, and a pleasure to fly. Now, the baggage handlers and airport crew, that's a different matter. I was once bumped up to 1st Class (billionaire class) on a Mexicana flight from Mexico City to Guadalajara, and nothing before or since could possibly compare to it.
Our Mexicana flight to Ixtapa was late leaving Mexico City just before Christmas some years ago. The pilot apologized in Spanish and in English and then added to make amends, he would conduct us to a special tour of the smoky volcano just outside the capitol. He took the big 727 jet almost sideways into the cone...we could smell the sulfur coming up. Then he kicked the jets open and we shot up and out of MC airspace. I thought my wife was going to scream. Our son, aged about 12 at the time, loved it.