Here is a scene I have prepared to allow the comparison of how different render engines handle different light situations. This will allow you to see the limitations of the methods each engine uses, as well as its strengths. This does NOT compare how they handle materials, or which materials they have, or what is better nodes etc… please leave that out of this.
It has a small light source, reflective caustics off a mirror, refractive caustics through glass, and the dreaded caustics viewed in a mirror as well.
SLG3 Using BiDirectional Path Tracing + Vertex Connection and Merging with max 12 bounces. 3 Minutes/162 passes Intel Core i5 750 Quad Core 3.3 Ghz.
Please render at 960 * 540 resolution, and please keep the render times around 3 minutes (longer if your machine is significantly older/less powerful)!!. Quote your hardware as well as the engine you used, as well as any settings, like my example above.
The scene has materials with names showing what that material should be. Please try balance the lighting to the image I posted as reference.
.Blend here BlankComparisonScene.blend (99.8 KB)
Here is the floor texture. http://cgtextures.com/texview.php?id=33550
Here is the HDRi. http://www.openfootage.net/?p=355
The engines I hope people will test include (but not limited to) Cycles, LuxRender, Yafaray, SmallLuxGPU, Mitsuba, V-Ray, Octane any any others you wish.