Just an addition, if you don't get the line directly from the source of the line you might not have a "pure line" snake. Just something for people to keep in mind. So many pastels get mixed together that you may not know what line you have anymore. In my case, I have Lemon (NERD) and Graziani pastels and I know they will eventually get mixed, those babies will just be "pastels" because I won't know which is which. The same thing happens with combo morphs with the pastel gene, a lot of breeders don't label the pastel line.
In my opinion, line is less important than looks with age. I really don't care what line they are as long as they still look good after a few years.