I use Hex, but lean toward Wings3d to fill in gaps. Hex is more functional as a modeller than Carrara....but Carrara does more other stuff (animation, texture, posing, etc). There are a few things Hex can't do (and its development is abandoned...), and then that where Wings3d can help. Blender is awesome but a steeper learning curve, huge community! Then the full time modelers invest in ZBrush/Maya/Modo, etc...