Our old table is wood that matched side tables we bought as a set. I personally like wood tables because they are easy to wipe down and tend to look better with age and wear.
Re-purposed Trunks/Natural Fibers
I love this look which to me lends more to a cottage style. If you are not a fan of the dark tones, you can easily freshen them up with a coat of paint. This style also works well as a multi purpose furniture in a small space.
I am seriously leaning toward making my own ottoman instead of a wooden table this time around. They provide another opportunity to inject pattern and/or color into the room.
In these living rooms they decided to forgo the traditional one linear table and either have a couple of tables grouped together, interesting material choice or no table at all.
The metal tables break up the wood in each of these rooms and add a bit of interest with their patina and decorative metal work.
Ultimately when choosing a coffee table as in choosing any furniture for your home it should be a decision not made in haste. Think about how your family lives, your budget and style. Go to yard sales, browse online and visit your local shops and boutiques. You never know where your next "must have" piece will show itself next.