I first started buying DVD's about 2002 but It was only those titles that went straight to first time DVD release plus a few classic TV and Music releases I bought leaving a legacy of titles I had to use my trusty S-VHS recorder for.
At long long last I have been replacing a good many of my VHS tapes of movies with DVD versions since updating my DVD player a short while back.
I replaced recently the following:
Close Encounters of the Third Kind
Two Of A Kind
Streets Of Fire
Days Of Thunder
The improvement over the tapes is hard to describe but they are sharper with better colour rendition