On two occasions had to decide between an emergency evacuation and continuing to gate. One I used all the slides, positive sabotage threat, and the other was smoke throughout the aircraft and we deplaned at gate.
Every situation is different but keeping the FA's in the loop is very important. Our airline procedure would be to not activate passenger oxygen masks. We didn't use brace for either because landing was not the problem.
On the first emergency I asked for push up stairs twice, once with dispatch and once with ops to avoid using the slides but they never arrived so had to make a last minute change with FA's to a full evacuation with slides.
It was a full B737 and as a new captain was relieved no one was injured.