WBT binding posts


Hi all, I bought a vintage Hitachi amp, so I need to change binding posts, because I can't connect cables to those tiny 70's holes. If there is someone here who is familiar with this - can you please tell me which are better and why: "classic" WBT 0763 or the "NextGen" WBT 0703cU? Thank you very much!
http://www.wbtusa.com/pages/binding_posts.html
http://www.wbtusa.com/pages/0763m.html
http://www.wbtusa.com/pages/0703cu.html
audiosonicsound
Thank you Peter, you have just helped me a lot, of course that I will go with the classic WBT 0763 then!
Is the design and build of the WBT along the lines of the Cardas binding posts? Gold over copper, no brass involved?