Few years ago I published the picture "The Little Avenger". I carried out this comparison because I hesitated for a long time before buying this AI plugin. I hesitated because I couldn't find a comparison like this one. I hope this helps others make the right decision. Needless to say, I am happy with my purchase of AIRE.
Left - pure iray nVidia render ab. 7 minutes
Middle - AIRE render from DAZ file ab. 4 minutes
Right - AIRE rendered from originally rendered bitmap (Left one), with the same prompts and parameters as Middle one.