about regular hell laser vs rianov-3 [hell], i'd say regular one is much better due to bullet type. regular one (photon bullet type) can snipe moving enemy easier (especially in distance). i got h70 rianov-3 with hell, but i prefer regular hell laser more.
and i recommend you to use spoiler code to make this thread looks more clearly.
also i couldn't find difference between stealth type armor and regular one, stealth one looks/sounds faster when i switch weapon. but not sure it's actually faster or not, or how faster than regular armors. if it's faster even by 1 frame, it could make sence though... (still not sure it worth wasting ata/atp boost ). i haven't seen someone was using those type armors in TA.