Chris has for sure done his homework and knows what he's talking about for sure, but there's been extensive crash testing in any FIA or SFI spec seat. A 10 or 20g off road crash should be the same as a 10 or 20g road car crash, the main difference is in how they feel when you're not crashing. I have tons of data and crash test information, I just usually try to keep the conversations to a common sense level as that's what most people respond to. Building a seat that's safe but comfortable usually means compromising. I'm sure most of you guys are using your rigs for recreation when they are not being raced, so you need to be as comfort is obviously a concern. Even though I'm a lifetime off roader, our business service all types of racecars. We were building custom inserts for road and oval track cars with an SFI spec'd foam before we started doing the same for off road. Our seat pad is a softer version of the same foam we use for other types of racing.

The only ones that think a suspension seat is more comfortable than a hard shell seat that's set up properly are the ones that haven't used hard shell seat. I've been restoring and racing vintage off road cars for since 2010, they all have Sparco seats covered to look like suspension seats. I've got 1000's of miles in Baja in racecars with less than 10" of travel in hard seats with a proper set up, I assure you I wouldn't be doing it just to sell a few seats.