for me it's usually a totally fragmented look at a world under a microscope, complete with cells and ameobas and all kinds of wierd shit that consumes my field of vision, and quickly thereafter my entire mind.
and it looks a little cartoonish sometimes too, but in a very very disturbing way.
The second dude must have had some low grade Salvia extracts if he was that coherant. The standardized extracts I get get me to the point where I am no longer aware of my surroundings.