well never cared about cheaters as i (like in every coop game) play only with my friends and not with random asshole strangersThat "DRM bullshit" keeps the PC version cheater-free though. It's a whole different ball game to the console versions. Each has their pros/cons.
As for DRM PC version is quite a lagfest for me compared to offline console version - but i guess my 50 Mbps connection is not enough for D3 to be fluid like console version without DRM