I've been a consumer and maker of industrial-strength margaritas for many years, consisting of roughly equal quantitites of tequila, triple sec (finding Cointreau too smooth) and lime juice, served on-the-rocks with a salted rim.

I avoid ordering margaritas in chain restaurants and in any restaurant that offers a choice of flavors.

The best margaritas I've imbibed have generally been in plain glass tumblers. Besides, my personal supply of margarita glasses broke over the years - I have no recollection how.