I am going to introduce them briefly below. Firstly, you should check (if you have not earlier done so) what is the state of the wall. If this wall is not smooth or cracked, the paint does not manage to hide those shortcomings. Thus, the paint on the wall will look just badly. Choosing thick wallpaper would be much simpler and more effective answer in this case. Secondly, you should keep in mind the possible changes in the design. Changing the color of paint will be simpler to do. In the case of recent paint, you don’t even need to wipe the previous color – it is enough to paint wall with the new one. Thus, if you want to modify color of the walls often, painting would be more comfortable for you. You should also answer yourself, what kind of pattern you would like to see on the wall. If you are interested in simple colors or repetitive patterns, then you can use either paint or wallpaper – . If you want to have on the wall a pic with a large, complicated pattern, the wallpaper is going to be more useful. If you are eager backpacker, probably you would love map mural.
If your son is a football fan, he would obviously like to see stadium wallpaper. Nevertheless, the official office will presumably look better with simple colour. Another crucial issue is price of paint and wallpaper. Nonetheless, in this case it is pointless to generalize, as prices differ and strongly depend on the particular kind of wallpaper or paint. The simplest way for checking that is to compare some products from a price range that you are interested in. To sum up, the decision between paint and wallpaper widely depends on the quality of your walls, your taste, the type of room as well as on the sum of money you are willing to spend on this.