For me the paints I prefer to use were the Reaper Pro Paints (.75 oz pots), locally they were a couple pennies less then the GW Citadel paints (.4 oz pots) and the Privateer Press P3 paint (.5 oz pots). Unfortunately Reaper have phased the Pro Paints line out so I will probably be looking at their Master Series paints, which I do have a couple of. I also use a couple of the Plaid craft paints (Apple barrel Colors and Folk Art paints) fore some select colors. In addition I do have some of the newer style pots of GW paints and some P3 paints.
Though I have been looking at the Vellejo Game Color Series of paints, and have heard great things about them. I may invest in a couple bottles of them if I can find them locally, if not I may break down and order some online.
Now every one who does zombie gaming seems to have their preferred Zombie flesh color, for me it is the now out of production Reaper Pro Paints Ghoul Grey, though I am thinking of trying some of the colors in the Reaper Master Series Undead Flesh triad (Bloodless Skin, Moldy Skin and Ghoul Skin) since I have only a partial pot of Ghoul Grey left. There are others who paint the zombie skin a flesh tone with a drop of grey, blue or green in it to give it an unhealthy coloring, where as others paint it with a flesh tone and then drybrush/highlight the skin with a grey, green or blue.
Now miniature wise I get what I can, Reaper Chronoscope (Survivors mostly), Zombiesmith (Zombies), Victory Force (Zombies, though have been looking at some of their other figures to use as survivors), Hasslefree (Survivors, do want to get their zombies though), eM4 (survivors), Mantic (Ghouls for use as ATZ Ragers), Hero/Horrorclix (survivors and zombies), and a couple of other miscellaneous manufacturers. The nice thing about modern day (Zombie and non Zombie) gaming is that more and more companies are releasing figures we can use, plus with some slight work you can even use Sci-Fi figures (I use the GW Catachan Jungle Squad figures with the "skulls" removed from the weapons and canteens as a Special Force unit, a Mercenary Unit, or even a Militia unit in my ATZ games).