I'm a BIG chicken, and I rode the Green version for the first time 2 weeks ago. No spinning. Light simulator movement. Even I could handle it. :ROFLOL:
As for the discussion the others are having about Orange, it wasn't so much the sensation of spinning or dizzyness caused by spinning that bothered me; it was the intense pressure of feeling heavier than your body weight due to the extremely high G-forces. High G-forces can make me feel very uncomfortable and grey-out. And I've never had that problem on the vast majority of roller-coasters (which I ride frequently). A few coasters that are nothing but inversion after inversion have caused this, but nowhere near as bad as the Orange version of Mission Space. And I've never had a problem with RnRC either, which makes me think that if the G's on there are as high as those on Orange (as another poster said), they mustn't last as long.
I'd take the exhilaration of speed and ESPECIALLY negative g's (aka weightlessness or AIRTIME) over the discomfort of positive g's ANY DAY, and have never found anything remotely "thrilling" about positive G forces. But to each their own...