Which do you think is a better Renderer? Sonflow or Yafray?
That depends entirely on what you want it to do. Blenders scanline can beat both hands down for some things, and they can do things the scanline cant.
Ian
sunflow has more accurate caustics ( if you have a square light, the caustics, if focused right, will maintain that shape ) Edit; if yafray is using irradiance cache.
sunflow’s AO is faster.
sunflow has 3 GI methods.
Easier (for me at least) to get realistic results
yafray is generally faster.
yafray is more intagrated into blender/has more of blenders features.
It really depends what you’re trying to do.