So ive used the hyper 4 quite a bit more, and i have to say its grown on me quite a bit. stroke changes by simply turning the motor bolt, nice and easy. give mechanism is classic stigma, works super well. 6 watt motor runs at lower volatges, and small adjustments make a big change in speed. like i said it still uses a swash plate to drive, but its connected to a linear slider. pretty punchy little machine. its grown on me quite a bit since ive been using it on almost every tattoo