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.
An end table is intended to make it easy for people sitting in an armchair to reach their drinks, nibbles or books and newspapers without having to bend down over the side of their chair to do so. The same with a coffee table _ it should be set at a comfortable height. Your first priority should therefore be the dimensions of your coffee and end tables. A coffee table should ideally be at just above knee height. Your end tables should be level with the arm of the chair or sofa. This will enable you to each to the side and pick up a drink with very little effort. Too high or too low, and it is more easy to spill even to drop your cup or glass.