Old client for sure..Before you actually had to work for your items now you can just be lazy noobs and pay your way into everything with zero work.
It made co pointless to even play that is why they have to keep adding more content because nobody works for anything and get bored too easily and require new content to entertain them for another few weeks then there bored again.
The problem is all the kids now days want everything for nothing the same goes for all the private servers.They want stupid rates like 200x exp and prof and drops so they can get 135 in a day and be bored.