Get PowerRender
you get the full sources, the license is like TV3D (and unlike most others) a site license not a single user license.
Those two things rule out most other engines including Torque, TGC, NF, .... and even TV3D as you don't get the sources to it (beside that point its definitely highly recommend to try it as well as it is high performant even on low end GPUs like GMA900)
Source is important especially if you want specific features or want to integrate 3rd party technology into the engine.
And I don't think I need to explain the importance of the later one ... you can easily spend a tousand and more just because each one who needs access to the docs has to own a license and the like.
you get the full sources, the license is like TV3D (and unlike most others) a site license not a single user license.
Those two things rule out most other engines including Torque, TGC, NF, .... and even TV3D as you don't get the sources to it (beside that point its definitely highly recommend to try it as well as it is high performant even on low end GPUs like GMA900)
Source is important especially if you want specific features or want to integrate 3rd party technology into the engine.
And I don't think I need to explain the importance of the later one ... you can easily spend a tousand and more just because each one who needs access to the docs has to own a license and the like.