Never used a JP; but the Geiselle SSA-E is my favorite in a 2 stage (or a G2S or an SSA with a lighter trigger spring.
If you want a bolt like trigger in a single stage, the Elftmann Match is unsurpassed, IMO, & it has a half cock safety notch, much like that on a 1911. But it's not cheap...........
MM
Love my SSA-E. Will order another for a new lower I am acquiring.
