Lilmikee, what OS are you running, and what kind of computer do you have (CPU speed, memory). Lightwave is supposed to be an excellent app, but it only runs on Windows NT, Windows 2000, some of the workstation OSes, and Mac OS, IIRC. If you've got the money and a computer that can handle it, don't hesitate to get Lightwave, otherwise, Truespace should be OK (I had it running on Windows 95 on an old Pentium MMX 200 with 32 MB RAM for a while).