Forgive me for the use of the word "tux", but I cannot recall what the official term we've come up with was; I think I was reprimanded for using the phrase "dinner suit". Anyway, I've been informed that I can expect several black tie events next year, and during each subsequent year of medical school, and some here and elsewhere have suggested I buy rather than rent. I welcome the opportunity to buy a tux, but I'm curious what you would do for your first. I have decided on a single button peaked lapel (if only I liked shawl collar there is an awesome Brioni on Ebay) and I'm probably going to go with Zegna. Would you purchase a black or midnight blue tux? I am sort of thinking black for the first one, and then if I choose to buy another tux in ten years I'll get a midnight blue one. Also, do I need to purchase the waistcoat at the same time and what are the rules for the fabric of the waistcoat? I'm going to go with the three button (do you still leave the lower button unbuttoned on this style?). Do you think I should also buy a cummerbund? If so, what are the rules for the fabric of the cummerbund. I'm obviously going to go with black/midnight blue vest/cummerbund instead of some horrid colorful pattern. Thanks for your help.