good question.. I think that might be a hard answer to wait on Brian.
I am kinda looking for the same thing. I want to get my hands on seeds that are strains used for cash crops; all my hard ass research led me to this site. I would try Big Bud, Cronic, Hollands Hope, Northern Lights. I have tried Cronic and Northern Lights; they seem to be pretty good. (NL being better smoke, Cronic being a better producer) They have a 3pack seed deal thats pritty fair price, just go check it out..
GL http://www.marijuana-seeds.nl/sitemap.html
I'm more looking to see what is being sold all ready because I'm growing with some seeds I got out of a bag o'mids. Just tryin to see what it could be maybe.