Among Leatherman multis, only the Squirt P4 has spring-loaded pliers. The larger tools do not.

Of all the larger Leathermans I've owned (Original PST, Super Tool, Core, Old Wave, New Wave, Blast) none of them seemed to need spring-loading to work better for me.

Leatherman is the Official Multitool of chaosmagnet's BOB and laptop bag. I have no connection to the company other than as a happy customer.