I am looking to start my career as a home designer.

I really love the ease of making things in SH3D, however the rendering when compared to fluid designer and other professional softwares seems a bit lacking.
That is it looks less realistic. I have seen renders which are very hard to differentiate from photographs.

Is it due to the models, textures? Can we import better models? or is it due to built-in rendering capabilities.

Look forward to hearing.