ATZ: All Things Zombie....the way to go now?

Downloaded a copy of these and printed them off and thinking of going this way now with my zombie/apocalypse gaming.I am a rule whore as many gamers are(I use AKULA's AR:SE rules at the moment because they are funand quick and I have a copy of Ambush Z from AMBUSH ALLEY GAMES but not that set upon them) and I have read the bat reps on other blogs like http://vampifansworldoftheundead.blogspot.com/ and http://obviouslyzed.blogspot.com/ to name a few and the general consensus is good.

What do you think of them and what supplements do you need and recommend to go with core rules?

Thanks.