sorry i only know the ns-2 and it's very good in my opinion. after
you set everything up in the right manner (effects in the loop,
delay after noise reduction) it is dead silent. notes fade out nicely
and you'll loose nothing except the noise... no signal loss due to
cutting, filtering - whatever. most noise gates i tried out just
stopped when the the threshold was reached. this one works like
the almost famous hush system - so - yeah it's worth a try.