I would say that when you put LD into play, the jumps in quality are pretty much equal. IMO the difference in quality between VHS and LD = diff. between LD and DVD = diff. between DVD and BD.

But yeah, most people (me included) had VHS and then straight DVD, so the jump was pretty big.

But then, at the time DVD started we had a small CRT, so the difference in PQ wasn't that huge either and we had a DVD drive in our PC before we had a player, and on a computer monitor DVD didn't look perfect either (because you normally tend to sit very near to a computer screen), so when I first saw an HD film on my PC (coincidentally it was STAR WARS) I was actually more amazed then when I first saw a DVD.