Tom, if you look at the MTF data on the Linos web site, a Rodagon-WA might be a better bet wide open than an APO-Rodagon, although you are 1 stop slower at f4 rather than f2.8

However, an APO at f4 will probably out perform at WA at f4 and does give much more even illumination

Bob Salomon of HP Marketing (US Rodenstock distributor) over on the Large Format Photography Forum says that the performance of the WA lenses is above that of the plain Rodagon but behind the APO lenses

http://www.linos.com/pages/mediabase...3-62__8230.pdf

Martin