Foam is very light, but in most cases loses camber and pop after not that much skiing. Wood is heavier, but much more durable and stays the same for much longer. If you are light, or are considering foam because you can get a good deal on a pair with foam cores somewhere maybe, then i would say go for it. I had a pair of foam teneighties last me for 3 years fairly well. Its all in preference i guess...