Luckily LF lenses have been well coated by all manufacturers since the late 1940's, if you shoot colour go for 1970's and onwards, earlier LF lens coatings give colour shifts and need the appropriate filters to compensate - it's not just an LF issue all lenses of that era, it's why manufacturers introduced newer versions for colour, CZJ the Pancolor, the Colour Skopar etc.
Ian
Ian, to to quarrel with you but I don't agree with you about coatings giving color shifts or the reason for the CZJ Pancol
ar (sorry, you spelled it incorrectly) and the Color Skopar names. In particular, Voightlaender's Color x renames were all marketing fluff.
I also don't completely agree with you about the need for coating. Four or more groups, absolutely, yes, coating makes a difference and the more layers the better even though I wonder why Hollywood took so strongly to TTH's various 6/4 double Gauss types in the 1930s while still photographers didn't. I mean, Hollywood had stronger financial incentives to do things as well as possible. Three groups or fewer, coating's benefits are much less clear.
Crumpet, about being picky about lenses, read this
http://www.largeformatphotography.info/chasing-magic-bullet.html There are many people out there who want "the best gear." Having the best gear, as opposed to merely ok gear, has very little effect on the final prints.
About why I believe this strongly. Read my lens diary, you can download it from
http://www.galerie-photo.com/telechargement/dan-fromm-6x9-lenses-v2-2011-03-29.pdf
I don't think I mentioned it in the diary, I've conducted blind testing with people who professed to be and were regarded as lens connoisseurs. They couldn't match color transparency with the lens used to shoot it. Failed miserably. So much for connoisseurship and claims that there are recognizable "lens signatures."
Don't worry so much. Buy decent kit, run it through acceptance testing and if it passes enjoy using it.