I had the JoyRider Shocks added to my 42' fifth wheel. I can't say that I noticed an incredible improvement or even if I would pay to have it done again. If you're handy like OldCoot and can install them on your own, it might be worth it but the installation got quite expensive to have an RV service center do it for me.
2018 Ram 3500 DRW/crew cab/long bed/4x4/4.10 gears pulling a 2017 Spartan 1245 by Prime Time
Checkout my site for RVing tips, tricks, and info | Was a Fulltime Family for 5 years, now we're settlin' down for a spell
Like ependydad ... I've had shocks on the fiver before my current Silverback ... there was very little difference before and after install. I'd not spend the money if I had the opportunity again. OldCoot has the Independent Suspension ( no leaf springs) with shocks mounted in a way that allows them to work properly ... most aftermarket shocks do not. They are installed at such an angle on fivers and TT's that the shock only moves an inch or two ... that angle makes them ineffective.
Most all Silverbacks and Cedar Creeks come with the EZ Flex rubber cushioned spring equalizers as standard equipment. I put the Equa Flex on my old 2005 Montana. My 2011 Montana had the Mor Ryde LRE 4000 rubber shear springs in place of the metal equalizer on it as standard equipment. I'm sure they all cushioned the ride to some extent.