vray or finalrender?

[squid]

hi,

 

this is my first post here - just wanted to say that this is a great website for architects and cg delineators alike.

 

here's my question:

 

i am thinking about buying either vray of finalrender for its enhanced raytracing capabilities and hopefully shorter rendering times. has anyone used either of these renderers in production? i would be curious to know how much faster either of these renderers are compared to the shipped viz4 scanline renderer.

 

has anyone experienced any compatibility issues when using viz4?

 

thanks,

squid