rgatijnet1 adds a good point that air bags is another option. I like having more control over the settings and don't mind extra installation components. But, are airbags obsolete?
I haven't looked extensively, but I don't see sizes for airbags after about 2012 (per Airlift website). Similar results at reseller websites.
From what I see, there are active comments & videos about Sumo Springs and lots of purchase options. Air bags have few comments / videos and the purchase options don't exactly jump out.
So, maybe airbags are "old school" and sumo springs are the way to go?