I am giving my home a face lift to include a new roof, windows, and siding. Every window in this house is either single or double hung.

The house is a story and a half with bedrooms on either end. One is over a walk out basement, so the window is roughly 25' over grade, and the other is closer to 18' over grade.

Current code says that all bedrooms at grade have windows that have 5.0 square feet of space for egress. All of my current windows are 5.17. Code says that windows above grade must be at 5.7 square feet, and these windows are currently the same as those on the first floor.

Each bedroom has a set of mullioned windows, and I could replace those with large sliders, or casements that swing outward. Openings are 72x62 in one room and 72x54 in the other.

For those who have lived with these other types of windows, what would be your preference?

Well if you ever open them for air flow wouldn't you have more opening with a pair of casement windows vs. a slider where the max opening will be half? We have a small bay window in front of the kitchen sink with two casement windows for the angles. We love them.

You are correct that you need a minimum of 5.7 sq. ft. Of opening.
This also means that the net opening needs to be a minimum of 20” wide AND 24” high with the opening no more than 44” off the floor.

Any window style that meats those requirements will work. One word of caution is that many casements will have the hinged side come into the framed opening so you need to make sure that doesn’t interfere with the above requirements.

Most manufacturers list which of their offerings meet these requirements on their websites.

On our third floor, I gave my daughter a casement window, all others are fixed or roof windows (it's her bedroom) and a safety ladder to put out it. Can't remember the name of the ladder, but it was made by First Alert, I believe (it been 20 years)

Casement. They seal better, easier to only open them a little bit (if it's raining etc.), better locking system, cleaner look and more airflow.