I have been using Shaderlight for set design, and find that it works fairly well. You can place lights on your lighting gantry and direct them towards a spot on the stage. Then you can change light type, spread, colour, and intensity in a dialogue box within sketchup. There is also a mechanism for fine tuning individual reflecting surface colour and texture, from rough to glossy.
I have not tried any of the others. There may be better ones out there, but the cost and performance of Shaderlight has been acceptable. There is a free trial available for low resolution renders.
Attached is a preliminary HD render I did for a stage set for Silver Linings. Render time with AMD R9 380 4gb graphics card was about 5 minutes.
Philip