I am going a little crazy trying to determine which ring flash to buy for my D700/SB-900 setup.

I understand the technical differences between Killerbees' and Ray's ring flash systems but I cannot find a site anywhere that just has the same subject photographed with different ring flashes.
Does anyone know where I might be able to find such a PHOTOGRAPHIC comparison? Please do not send me to a discussion forum on what system is best for what condition. THOSE are easy to find.
I know these are not the best but I need a decent portable and easy to setup system.

There are several sites out there that have examples of one or the other but they clearly have other light sources and are prepped for marketing.

Thanks so much!