Windows for 3 season room
I'm trying to decide whether to get casements, single-hung, or double-hung windows for a new 3 season room. The windows will be quite large (about 42 inches wide by 60 inches tall). This is in the northeast where summers are hot and winters are freezing. As I understand it, pros of casements are that they allow full ventilation for good cooling during the heat, but are very tight sealing and energy efficient for when it is cold. (The room will not be heated, so not really usable in the winter.) The main cons I can think of are that it seems like the hardware fails quite frequently and it's easier for rain to get in if left open. The pros of single/double-hung windows are that they are cheaper (in these sizes anyway) and rarely fail. The con is less ventilation. I've never opened the top sash of a window ever in my life, but I guess I might want to in a 3 season room to let the hot air escape.
Anything else I'm not considering? Any recommendations among these options?