Perfect Dark is the superior game, it's beyond opinion.
It took everything good about Goldeneye and expanded on it. Much of Goldeneye's content (weapons, multiplayer levels) is featured as unlockables on PD.
Some of PD's improvements:
- Weapons with secondary functions
- Player profiles (stats, rankings, settings etc.)
- Voice acting and cut-scenes
- Much better graphics, use of N64 expansion pack
- Fully custom multiplayer, combat scenarios, bots
The only thing missing is the Bond licence.
I'd say most people who say Goldeneye, do so because they have not spent enough time with Perfect Dark.
Prove me wrong.











