The boys are having some fun with you, aren't they?
Re. Blends, avoid them unless you have used the same compounds in the same doses with the same pinning schedule for the same the length of time. Something goes south with one compound with respect to sides and you're bailing on the entire cycle or worse, trying to gut it out.
My opinion on Blends; you're one lazy bastard if you can't draw from 2 or 3 different vials.