I wonder if @ssgbryan even uses the AMD ProRender. I can't use it because I'm on the wrong team, i.e. Mac + Nvidia card. It doesn't work, and the ProRemder that comes with C4D R21 doesn't even work in CPU-only mode, so I can't use it at all.

ProRender a better engine than Cycles? From what I've read in the forums, ProRender still has a long way to go before it is really ready for production. Maxon has discontinued ProRender from C4D R23. There must be a reason why Maxon (an early supporter of ProRender) did that. Now it's entirely up to AMD to support ProRender for C4D.

If I had the choice I would like to see Corona or RedShift render engines in Poser :-)