I don't know if I would be enthusiastic about carbon.
Yes carbon fiber has very strong tensil strength but it is brittle and any contact would likely snap the blade.
I have never had carbon props but I have used carbon blades on my helis, it about made me cry when I snapped my new $40 blades on my T-Rex on the first flight. (it was a minor strike that my wooden blades would have survived)
As for props I have recently started using Graupner props on my 4 strokes and so far am really happy with them.