Ok, back home.
Before (No ini/shader tweaks)
After (ini/shader tweaks)
Personally I feel the after shot is far, far more realistic. There's an fps hit though. Not sure if it's mainly the shaders or my ini edit. Probably half half. I'll probably turn down shadow quality a bit to improve the fps. I'm sticking with the shaders for now though. Pretty sexy.
My ini tweaks are just shadow changes for the most part. Followed some of the stuff in the OP/the geforce guide. As for the shaders, look a few posts up. I used the Himmelsrand shaders with settings from Confidence Man. I also have a load of mods that you can check
out here. Started using the sun glare mod from isoku and love it. Much better with the new release.
edit: haha saw your comment just as I posted this. I can post some night shots too if they're wanted