8x10 is a true dining room and living room size rug. You can align the rug with the back of the sofa like Monica from Friends or put it half way to add a little shape to the room. It also works best for having side tables, as some, if not all the rug will be able to hold the side table. If you are looking for a living room rug this is the best option!
Placing the correct size rug in your space is as important as choosing the right color or pattern. A rug that it is too small will shift the balance of the room unfavorably. A rug that is too big, especially in open floor plans, may put the area designations off. There are a few rules of thumb, but a picture says it better. Use these handy guides by Interior Designer Lisa Ferguson to make the best choice.