1. Absolutely no worries about pulsing.
2. Silent, absolutely no noise.
2. Always dry, no need for a moisture trap.
My refills are generally about 20.00 USD per pop. My tank usually last me over a year because I am not a prolific model builder. I would guess a full tank could get me through 10 or 12 1/48 builds with out a problem.
This is my set-up.











