Has anyone given these a try?
About the carbon material for the saddles, from their website:
"This material is a very specialized form of carbon. There are many forms of carbon ranging from graphite to diamond. Black Diamond carbon is not graphite, nor is it a carbon-fiber composite, versions of carbon typically used for musical instruments. It is a highly engineered form of carbon requiring specialized equipment to produce. While, unfortunately, expensive to produce, the random, fine grain structure of Black Diamond carbon provides a very efficient means to create or transmit desired string harmonics of a musical instrument."
I have to admit I'm a sucker for new things that come out for acoustic guitar. I'm sure the saddles will sound different, but whether its better is something inherently subjective. If it does lead to a significant improvement I would say the $90 isn't a large price to pay, but that's where the risk lies. I may be spending that money on something I don't like. I would say is a safer risk than spending $70 on titanium bridge pins.