It's the other way round on the parent blueberry. F5 used in blue dream, F4 used in Azure Haze. When you grow out the Azure i'd be intrested in a comparison between the two, as i've been looking for something close to blue dream in seed form. I'll keep an eye out.
@Lemon Sour - I've got a post on the serious seeds forum on a uk site (just after 4:19) and there do seem to be a few issues with both the ak and wr strains from a batch or two of the seeds. You will find alot of people who have grown them and swear by them, myself included regarding their kali...