Landscape lenses for 4x5

I would like some recommendations on lenses for stricltly landscape and natural history work (no studio stuff). Does the higher priced glass (Schnieder Super A ngulon, etc) really make a difference in outdoor work? Can one lense be noticeably better in say a 16x20 cibachrome print? Any help on this would be ap preciated, as well as the risk factor in picking up used glass.

look at the article of john sparks "lenses for 4x5 field work". The risk factor with used glass looks mimimal to me (all my lenses are used). for color work, it is often recommended to stay with modern (ie current production) lenses for optimal results.