Filter and Fan cannot decide on two options. which would you go with?

My grow room is 4'x3'x7'

Which is 84 sq feet.

I am buying a blockbuster 6" air cooled hood with a 600 watt MH during veg and 600 wat during Flower.



Cannot decide to go with a

Vortex S-line 6" fan built in damper and buy a dial-a-temp speed controller.

or go with a

Max Fan 6" built in speed controller and buy a damper.

I will more likely go with a Mountain fresh carbon scrubber as I have heard those are very nice.

Which would you go with?

I would get the Vortex. I have a S&P TD Silent and that works well too.