We have a large cat. Large cats need large scratching posts. I really like the Kitty Condo brand 24" scratching post.
We once made the mistake of buying a shorter scratching post by the same brand. It did not work out at all for our cat. He was too tall and had a difficult time using that post. Plus, the shorter post would fall over when our cat was trying to use it, due to his size and weight versus the size and weight of the smaller post.
With this taller 24" post I am reviewing, we do not have that problem, for the most part. Our cat can comfortably use this post without scrouching down too much. Though I wish the post was heavier, because our cat does charge at it, we just make sure it is near a wall, so it does not fall over. I suppose this can be remedied by adding weight to the post some how, but I think pet furniture manufacturers should anticipate this ahead of time and allow for it. The base is made of heavy wood or particle board and the post is made of some sort of rock hard cardboard or composition, so I can't say that it is lightweight or cheap. It does seem sturdy enough.
Our cat loves the sisal rope that wraps around the post. It seems to be just what he needs to tone his claws. There are many cardboard scratchers out there, but our cat refuses to use them. I guess he is just a scratching post type of cat.
This post lasts a long time. Eventually the sisal rope gets a little loose as you can see from our photo, but it is time to get a new post anyway, as you can also see from the photo, our cat has pretty much scratched it out.
Our cat loves the carpeted area at the bottom of the post. He will sometimes just lay there and relax. We also put catnip on the carpeted part and our cat will then use the scratcher for playing, not just for scratching.
We will probably buy the same exact scratching post this time because we are happy with this one.