I didn't think so at first. I wasn't going to get it, but a very generous friend bought copies of Bryce 5 for both my sister and me. Not sure why he did this, but I soon found out that it is well worth it. He's a really nice guy to do this. He tried Bryce and played with it for a while, but never had time to do it, but he knew my sister and I both use it and he bought upgrades for both of us. What a guy! I LOVE the tree generator! And the textures seem more vivid to me (maybe it's only my imagination). Yes, do upgrade. You won't regret it. Melanie