In the tutorial we will firstly work with the demo version of Deep Exploration, so that every designer can test it directly on their computer. Of course the 3dsmax 7 or 8 demo works perfectly with the .kex plugin. But if you model a complicate aircraft, you really need more than 30 days. 3dsmax 9 doesn't work with the .kex plugin, which was mentioned by another user (don't know which designer posted this very important fact, before someone is buying a 3500$ software). Whatever software you use, it's clear that you will pay really less money, than for 3dsmax, no matter which version of Deep Exploration or program bundle you take