Really recommend anyone looking to reduce bounciness, jarring ride, etc. take a look at this thread:

Recommendations for Leveling Out Suspension

Pricier than Moog or even OEM springs but they're adjustable based on your load and they shouldn't wear out as quickly. It smoothed the ride in my VX while maintaining sharp handling, and when we couldn't find replacement springs for my wife's Axiom we had these installed instead. Probably handles better than the day we bought it.

Good stuff regardless of the answer to the "spring helper" / bump stop debate.

(Btw Isuzu calls those "rubber stoppers" on the Axiom, so there's a 3rd name for them. )