I am considering picking up a 210mm or 240mm lens for landscapes to add to the 90mm and 135mm lenses that I have at the moment. The lenses that I am considering are a 210 Symmar-S 5.6 or a 240 Symmar-S 5.6 for use on a 4x5 Sinar monorail.

I was wondering whether anyone has any opinions on the lenses themselves and also whether the 30mm focal length difference makes too much difference in real life usage?

Any views or opinions are greatly appreciated.