RaySupreme is a full-featured, powerful and easy to use 3D modeller http://store.steampowered.com/app/262650/
Inexpensive. Can export obj for use with octane renderer stand alone.
Raysupreme is consistently on the top five seller since its release. The most affordable 3d modeller that will support text to 3d. More export formats available soon.
Merry Christmas!