M Catering recently serviced a high-profile members-only museum opening at the Heard Museum, and did a wonderful job from what I could see as an attendee. They served some great customized tamales with goat cheese, another appetized with rice and duck that was quite nice, and a flan that was the talk of several tables of guests. If I was going to throw an event in Phoenix (Unlikely since I live in NM), I'd check this outfiy out.