I read several posts on the internet about those presets. So i decided to try them by myself. I purchased the LightRoom 4.0 version. As you can see from this Canon 5D MKII image i took in the Korogocho Bidonville just outside of Nairobi in Kenya. I tried several presets but for this particular image i used the Kodak Portra 400.
I was really pleased by the result i got. I processed few more images with this preset and loaded them in the Street Photography gallery of my website.
You can download them here: VSCO FILM