I found out that there are several pathfinding plugins.

I was wondering which one should I use for the following purpose:

1. diversity.
AI navigating through complex buildings with stairs, bridges etc.

2. usability.
How seamlessly can I toggle the pathfinding system for individual
entities.

3. stability.
Does it support several entities, and how stable does it work.

A more practical example to sum everything up:
An enemy follows you around, you are in an elevator, the enemy follows you by taking the stairs (running towards the nod nearest it's target).

I am not asking for an pathfinding system that is capable of doing so, but rather one that fits the description the best and can be build upon.

Intense X looks interesting, but it is nowhere to be found confused
IntenseX

Thanks in advance :-)

Hello, it is me,

Middleagedchineseman!

Note: Not actually Chinese, nor middle age