I tried swashdrives but not this one. I also think that rotaries should be as simple as they could be, as i want to step away from the maintenance of coils.
And like others, the more give the machine has, the harder i try to run it, so not much point really.
In general I would say that when i first got my stigma hyper, I had to relearn how to saturate and all, slow down my hand movement quite drastically, adopt more a cross hatching motion than rubbing etc ... a whole new experience.
Then I switched back to coils, (i kept lining with) for the shadings, and all this time learning movements, motions, hand speed, stroke etc ... when translated to the coils worked like a charme.
It was like starting all over again, very exiting ! So i would say that rotaries definitely improved my tattooing even my tattooing with coils