trueSpace is a really great tool for modeling. It includes a very healthy dose of polgonal tool as well as Sub-division surface and NURBs. What makes trueSpace unique is its lack of menus. Some say the icons take awhile to learn. But what program doesn't. Another neat trick that trueSpace throws at you is its context sensitive toolbars. When you are editing the mesh of an object a toolbar is floating nearby with the appropriate editing tools. Same goes for NURBs modeling. Also, it is all done in one full screen window for maxium editing. There are also 3d tools for manipulating the object, i.e. rotation and scaling without the need to hit a keyboard shortcut or push a button. For modeling, trueSpace is a very good all around program. Vincent