There are now data on the Reed website that are interpreted to mean that the Red Cedar, Pernambucco, and one other wood are the three best in terms of lowered resonance. I need to go back and look at the data again, but I do not recall that the woods were compared to alu or stainless steel. Would like to have seen such data. Nevertheless, since Vidimantas himself seems to have narrowed down his preferences, I kind of wonder why he continues to offer six different varieties. Perhaps for those who are pig-headed. Not hard to find them, either.