I bought my Omega D2 (not D II) for $300 including several lens boards, lenses, and neg carriers. I settled on the Omega because I know there are tons of parts for them on the new and used market. I also have a B600 wich has never let me down. I guess you can say I am Omega brand loyal... I use a large lens cone with a 162 mm lens for 4x5, but use the same flat lensboard for my 50mm and 105mm Nikkor's. Eventually I will get a Nikkor for 4x5... eventually