This is my first Grado 'woodie', excepting any Grado headphones where the wood parts are inside of the earcups only. I describe the sound compared to the SR325e, since I don't have a sense of how any of the Grado 'RS' series sound. This is a very good headphone, but be aware that some of the $650 USD price is because of the limited material from that Brooklyn tree.
http://rockgrotto.proboards.com/thread/10824/grado-brooklyn-stereo-headphone-review