Twisting drops aren't bad... They're just not for hypercoasters. Raptor has one of the best looper drops in the world, and yes, it's basically an elongated s-curve, not straight.
In my opinion, I love Mantis' drop for some reason. The little dip and turn, then the little 2 foot climb and fall.
On hypers, I think the dip is best first, because you get a little speed going and essentially fall off a cliff. It's great.
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