If you can control yourself better in -9.8, you can make that look really good without floating or any of those things.
I personally can't -30 to save my life, I just can't control how I look at move that well, but if I ever -9.8, I can control myself and look really good without the floating.
It's not what gravity's best, it's what works for you. Everyone has there different opinions. Like, I personally hate doing anything in-between the two gravity's, but that's just my personal opinion.