Double-hung windows are more expensive since both window halves move, yet this makes it easier to maintain.
Single hung are less expensive as only one half of the window moves, and along with double-hung, are the industry standard for interior windows.
Skylight windows are great for bedrooms (if you have shades) or sunrooms as they allow for additional sunlight and add an element of the outdoors.
Glass block windows are the perfect option for bathrooms as they add an opaque element of light without people outdoors being able to see in.
Hinged windows swing open side to side. They are excellent for insulation and allow a less obstructed view.