I've played on both for a while, and I have some problems with chosing. Isro: Many partys - Some other players(legit) - Nice jobbing - Many guilds - Traffic - bots Csro: Not many partys - Not many other players - Almost no jobbing - Not many guilds - No traffic - No bots? - Chinese players =p
In cSRO you have many partys, you just need to find some chinese dudes who can speak english. You have also much players, I mean, everyday I come in Constantinople/Jangan I see new legit, english speaking players.. Jobbing, just like th;e partys, party up with some chinese, and you can do some nice thieving(Or trading, or hunting..). Guilds is the only problem, there are only 7-10 english guilds I believe.
In CSRO you have bots, but not that many, and you can log in in the first try. IF you dont like chinese, play isro. But then you have turks. Imho turks are worse than chinese players.
What I like about csro is the cheap powerlevel, I logged in for the first try and a chinese boy/girl saw me, he came up to me and wanted to level me to 10, to give me a good start ^^
What I like about csro most, are the friendly players. If I think back to Isro, I remember guys shouting things like "DONT KS YOU NOOB" "GTFO MY GRINDING PLACE" And that sort of things.
CSRO - Easy to grind. U dont see 1k of bots at same mobs u are. Login without code verification and at 1st try. The english speaking players are all(?) legit. Many guilds and ppl around, just go to inverted ? server in 2nd division. More events than isro. Lvl 90 Cap. Easy to make money (read other topic). Chinese > Turks Worst part is the item mall u can buy in stall (positive) but u cant buy silk.