I have never owned a Krl XS, but do own a Kral Bighorn and Karl inspired Kratos, both are dependabe and powerful and very accurate.
I do own a Diana Skyhawk and have for a few years. The Skyhawk is either the King of the p-1/p-35 world or a silk purse made up of a sows ear, In my educated opinion. snowpeak is the Hatsn of China, the workmanship is terrible, the barrels are trash, the baffle system in the shroud is unworkable and they ate prone to failure in the fill system. I have had to rebarrel my Skyhawk, redesign a reliable fill system and the rifle has set in a box as a pile of parts for a period representing a third of its life. It now has the Jake Bowman forward lever system which having to shoot wrong handed is a blessing, but make no mistake, it is a 50/50 love -hate relationship. I keep shooting it because I love the handling chatrater rustics and that Gorgous walnut stock that Snowpeak had nothing to do with. As you can see, I have tried to make it work for years.
The Kral XS has the same type of walnut stock and will handle as well as the Snowpeak junk, but it is a family airloom quality item.
For me, Snowpeak is crap and Karl shines with precise quality.
Regards,
Roachcreek