I picked up 2 cases of Deathknell and the distribution was very good.
Post Deathknell, I bought 2 cases per set on Archfiends, GOL, & Aberrations... and the distribution was TERRIBLE. My experience with GOL came close to ending my plasticrack addiction.
I cant speak on Angelfire though, I have since switched to only getting a handful of boosters and then buying singles in the secondary market.