The attached Blend file has different studio set-ups such as: White Room Dark Room with Colored Side Lights Overhead Light Lines Overhead Square Sky Lights
They are on different layers positioned. Experiment with light emission values and post pro blurring in the compositor.
Easier to learn incredibly fast for interior powerful materials less flexible because it has no nodes.
I would say Thea is a pretty professional product architecture render engine.
Nice setup! Really good for displaying work : )
Cheers, Rex