Steel specifically when doing the larger caliber. Steel is heavier and compensates for the recoil. Better find one and try at least dry-firing so you can feel the trigger and the grip. Jericho is a good pistol out of the box. The only downside is the scarcity of accessories. Finish is also on the not-so-desirable condition. It scratches easily and likely will be a common issue when holstered. If you can find a hard-chromed version, that is the way to go.
I have nothing against polymer pistols. But I still believe in the strength of steel, even alloys to outlast polymers in reliability.