My impressions thus far are that these are great quality trees, and a great deal of attention has been paid to them, however they make liberal use of Opacity maps on the leaves! This results in rendertimes in VRay been blown out to 4-5 times than if opacity maps are off. I’m turning them off where I can get away with it. I really hope they go with 100% geometry in the future.
Agreed, they are good trees but take f**king ages to render. I always turn filtering off on my opacity maps to reduce render times btw.
I tend to re-create the materials anyway, or just turn off filtering in opacity.
They use SSS on a lot of their leaves, too - which is really slow.
Yeah I usually go through and optimize them. I couldn’t believe they left filtering on! I’m pretty sure like VRay, this slows down MR too. As I said the models are top notch, but they make the materials to get a pretty result rather than a fast one that just happens to look good as well 
Opacity maps are evil.
I tell you what though, I’m eyeing off those new 3D trees on vismasters..
well i ve bought vol.58 and am a bit disappointed how the trees look from closeu shots, esp the big ones 
evermotion mats r always a nono so i redo them
and what really made me mad is that they dont do them in max9 format!!!
i was so furious when i opened the package…to be fair it was written there on their pages but small and grey letters so i overlooked it …grrrrrrrrr