Hi guys im looking to improve my blends, not b and g just colour for now

So, as mentioned in a previous post i have a fast hand speed, and alot of the time i feel it fights me with saturation, being a bit of a fussy one i tend to layer colours quite a few times into each other, i havent come across a machine yet that helps me pull away from this habit, does a softer hit mean i can layer more without damage to the skin? or will this just piss it off? how does a super soft 6mm hit from a hyper v3 work in comaprisson to 3.5 with no give? will it put more ink in because of the longer throw? i guess itl bog down alot meaning hand speed must be slowed down? its doing my head in not understanding things!!! i feel i need a machine i can layer over and over without worry of overworking the skin. so many questions. Thanks.
Gary.