Which generation was a bigger leap in visuals 5th to 6th or 6th to 7th?

[Doobie_wop]

People are crazy, the difference between PS2 games and HD games is huge, I should know because recently I've gotten into the habit of collecting older PS2 games and playing them for an hour each and I was shocked by how bad most of them looked in comparison. The jump from the N64 to the Gamecube is pretty big, but it isn't as awe inspiring unless your playing the well designed Nintendo games ( Sunshine, Smash Bros. Melee, Luigi's Mansion).
Hell, I recently played Wolfenstein (2009) in SD and it looked hideous, plugged the HDMI and switched over and the difference was substantial and that's just based on the resolution.