Yeah, I loved how realistic GTAIV was, but it somewhat feels wierd to kill someone. I don't know, I have wierd morals or something.
The bloom in GTAIV pissed me off so much, though, that I stopped playing it because I got tired of the Car physics, Bloom effects, How foggy/gray everything looked, and the blur effects.
Probably getting Saint's Row.
I have GTA3 in storage somewhere, and Vice City for the PC.