For presentations 635nm 1mW or 5mW

This is my first post in the laser forum.
Hello everyone.
I present quite frequently and need a new laser pointer. My old pointer (now gone) was a little dim when used in a big hall with powerful projector.
I have my heart set on the red-orange AtlasNova 635nm lasers. The question is:

Is the Class IIIa (5mW) 635nm laser pointer too bright for a small room with a couple of lights on?
Shall I go with the 1mW or the 5mW one?
These are 6 hour long all day classes and an overpowering, blinding pointer would tire the attendees (cranky engineers).

Please share your experiences.

Thanks

Yeah the 5mW will be ok. Red lasers under 5mW are perfect, Once you get to the 100mW range then it will be brighter and you will see the beam in a dark room.

so you should be fine.