Gel insoles are thicker and provide more cushioning since they are thicker material. Foam insoles are flatter and maybe better for people who require much arch support. The great gel or foam insoles are the ones that will make your feet feel comfortable and pain-free throughout a long day of standing or walking. Powerstep Unisex-Adult Pinnacle Signature is the overall best insole. Still, the type of insole you need for this depends on what you're looking for, such as cushioning, support, shock absorption, etc.