You will always be able to buy a new P99...being able to get a PPQ for $500, especially now...those things are hard to get right now and commanding a pretty good penny.
You won't find a better trigger on ANY stock pistol.
I don't consider either better than one or the other. The P99 and PPQ offer similar performance with two different trigger systems, nothing wrong with that. Each has its appeal depending on the preference of the shooter.