Yeah, the DVD roms themselves aren't TRULY arcade authentic, because there are menus, etc. I used to play the DVD video version of Space Ace on my DVD player, and there was a 2 second pause between EVERY single move!
![Tongue :P](http://newforum.arcadecontrols.com/Smileys/default/tongue.gif)
Then I got the DVD roms, and they wouldn't even work on my PC. Finally, I got Daphne and ripped them, and now the response time is there, the original hardware is fully emulated, no disc switching, and I can even run it seamlessly with Mame using Raging Dragon! That's important, because the last thing I want to see on my cabinet screen is Windows!
![Wink ;)](http://newforum.arcadecontrols.com/Smileys/default/wink.gif)