If you can't decide on a size remember this: It's better to have one that's too big than to have one that's too small. Wooden coffee tables, as well as all coffee tables, are usually 16 inches tall. Some however can be as low as 10 or 11 inches tall. Are your wooden coffee tables going to be foot_rests for family members and visitors? If you think that there is a chance that people will put their feet on the coffee table then having wooden coffee tables is the way to go. Wooden coffee tables and upholstered coffee tables are the most resilient against damage. A simple polish can almost always remove dirt or marks left by shoes.
The size of your singular coffee tables is also a very important consideration. If you have larger scale furniture you want your coffee tables to be larger in scale also. A room can look odd and unbalanced if the coffee table is disproportionately larger or smaller than your other furniture. Keeping this in mind you should determine what size coffee table will best fit your space. You don't want to purchase a coffee table only to realize when you get it home that you don't have space for it because it's too big or that you have too much space because it's too small.