Quote - Thanks for the comments and info.  Would still like to hear from someone who's compared a render in Firefly to same render in Lux to show speed comparison and also some quality comparison.  If anyone has images, please link us so we can see.

People have asked this before (with Reality for DS, with Luxus for DS, with Pose2lux here and now with Reality for Poser).  Its a fair question, but its a different render type, different materials, lighting, etc.  Also, a "great" Poser artist can make awesome stuff with lighting, and the same with Lux.  Ask folks here, and they may be great with Poser, but new to Lux.  Not really a unbiased comparison. (no pun intended)

Some people will be fine with a render being "done" in 30 minutes, some may like to let them "cook" overnight.

You will have as much luck going to sites that have lux renders, and compare them to poser renders.  Both of the great ones are great.   ...but you should get an idea of the overall look that both give.

Not trying to dodge the question, I just don't think its an apples to apples thing.