RE: Wood or D-Ram?
I see that the difference between S-type 115 wood and D-RAM is just 0,5 kg. This means that, considering the usual +/_5% tolerance, there could even be overlap between the weights of the two versions. Therefore I have to change my advise. Ideally, I'd choose a wood. But if I could check weights of a few boards before purchasing, then a light D-RAM would be much interesting.
Probably in the end the real trade off is in money vs. that peculiar "vibration damping stiffness".