go here for dynavector info: http://www.dynavector.co.jp/english/index.html
i've heard good things about these tonearms, but they're *very* expensive, even used. i'd suggest an origin-live modified rega rb250. they also do mods for the rb-300/600/900, but, due to different bearing design of the 250, o-l sez it's the best of all, after the mods. a true world-beater at a ridiculously low price, relative to other arms. http://www.originlive.com/index.htm i got mine from stoneaudio-uk: http://www.stoneaudio.co.uk/
good luck, doug