Also note that Narco gives a -2 to addiction tests for drugs you arent addicted to, but a +2 to tests on drugs you are addicted to. So there is case to take addictions to drugs as negative qualities at chargen for the free karma.
I prefer narco with psych/cram. Lots of hours of excellent bonuses (length of effect measured in hours and not minutes) and both are only psychologically addictive and relatively cheap (compared to ware costs). lots of characters, even combat ones, can work super well with +2 to logic, intuition, reaction, and +1d6 to initiative.