I've read a bunch of threads and spoken with several people.

At the moment I've closed in on 2 potential candidates, a Goerz Red Dot Artar 356mm f9 and a Kodak Commercial Ektar 305mm f6.3.

Both seem to get great reviews and well suited to my intentions (primarily as a portrait lens for head & shoulders shots shot at wider apertures, as well as to fill out my current lens set of 90/150/210mm for general/landscape photography, where I expect I will shoot more stopped down).

Any thoughts or suggestions on how these two compare?

Thanks!