+1 for me.
I have over 100 PSX games all with the instructions and in the CD cases.
The cd cases are easy & cheap, you just have to locate the totally clear ones, which I find at Walmart. I personally do not see the advantage (especially the expense) of converting all those CD games to DVD cases.
(That is just my opinion, other results may vary)
The other down side for me is that unless you use the slim dvd cases, they will take up much more space that the CD cases do, and I am not sure you can store the manual in the slim case.
I think they look nice on my shelves in the CD cases. I have had to print some rear cover art/inlays for them using some not so good scans, but overall they look pretty good.
I also have a bunch of NES games all with instructions. Mostl are originals, but I had to print some of them from scans I found online (Which were not the best quality).
I might be interested in storage cases for the NES games, but I dunno how hard it would be to find original boxes for artwork or if the cases would also let you store the game manual inside.
I am willing to scan all my manuals/case artwork for the cause, though.
This has become somewhat of an addiction and my wife just mentioned that she would like the name and address of the person who started all this.....