I'm new to LF and trying to get a 90mm lens. B&H sells the nikkor 90mm 4.5 for $1000. The rodenstock for $1620 and the Schneider for $1725. Is the nikkor that much lower quality? I've also been checking eBay. I see a 1984 rodenstock 4.5 for $800. Is it better than a new nikkor?

Thanks
Chris