With a great increase in the number of insertions before failure and no additional heat cycles or solder variance to worry about press fit connectors are a service we recommend for a more reliable end product.
Semi flex PCBs are a flexible substrate between rigid sections, these generally only flex once for final installation. Semi flex PCBs are an excellent way to implement PCB to PCB connections and edge connections to PCBs with no soldering required. This can greatly increase reliability and consistency whilst reducing cost in assembly.