Doom was better for jumping in, blasting some daemons for 5-10 minutes and basically getting a quick fix.
I must agree. Doom gave you something that no other game really ever has. It was refreshing to get a quick fix of mindless destruction and killing. I done blowed up $#!^ lots of times, and yet Doom never grew old for me.
Dark Forces, albeit vastly superior in every concievable manner, never truly supplied that in the same way.
But because I'm a total freak with Star Wars, DF has my vote for better game overall.