Cheers for that. I'll be looking to upgrade to the LS IV at some point, because the max dpi with the LS 30 is 2700, which is too low for pics to be submitted to some picture libraries. I'd be extremely lucky to get hold of one of those for a song. Still you never know. The Coolscans are generally eyewateringly expensive - even tho' they've come down in price since they were first released. As people complete digitising their back catalogues there should be more around she says hopefully...
I've got an old version of Vuescan and the choice of b&w films to key in is quite small - and I spend ages fooling around with different permutations of settings to get the best scans. In fact the amount of time I can spend just on one image is unreal!