HI! Ive tried: 3DS max, Lightwave, Cinema 4d, Maya PLE, Wings3D, and many others. Actually I use Lightwave, I think it has the best modeler I have seen, works with Sub-d, poly modeling or Splines. Maybe the only matter is the lack of NURBS or curves tools, but you can use the LW famous Metanurbs, wich is a sub-d system perfect for organic modeling. Another good point is the combination of Weight maps with Metanurbs, wich will give you a perfect control over sharp edges using the sub-d system. Well, my 2 cents ;-)