Dayz mod or Dayz standalone?

Do you guys know which one has more players and looks better and less lagg?

Im sorry, Which one has more players exactly?

I'd get the mod. I bought DayZ SA 2 days ago, and due to the fact that I like to play legit, the game was really hard. I couldn't find any loot. I found a hatchet and a Pepsi, but i was happier to get the Pepsi so my character would shut up. Really hard to loot i searched for like 2 hour intervals.

Get the mod.

Depend..
If you never played DayZ before you can go for the stand alone.

The difference between mod and standalone aren't that big, outside of different graphic blablabla

DayZ Mod got plenty of addon for vehicle, travelling NPC, Hostile NPC etc etc
DayZ StandAlone is more like the begining of the mod you got the game with zumbee and other stuff but it's missing lot of content (vehicle etc)

Up to you, if i were you, i should go for the mod if you own Arma 2 + OA to give you a taste, if you enjoy you can always save and go for the stand alone or keep playing the mod

(ATM i think it's better to wait it out before getting the stand alone)

They're both great but if you can only afford one probably go SA because it's cleaner (visually) and there's more room for improvement. You'd have (more of) a say in development and, not to mention that Mod probably isn't going anywhere developmentally. If you can, though, go Mod now, SA later when they finally add cars.