I would like to understand all the hype about insoles in the badminton community. I changed the insoles on one pair of walking shoes to compensate for slight leg size variation to prevent hip issues as I can walk very long distances some times, but I've never changed the insoles on any of my sport shoes, nor felt the need to, which is why I'd love to understand the hype. Instinctively I would think that the company that makes fancy sport shoes are the best able to develop a perfect insole that specifically fit these shoes and their intended characteristics, so I don't understand why the factory insoles shouldn't be the best ones at that price level. I have two pairs of SHB03Z with factory insoles, they both feel great, and except some superficial wear of the insoles, I think everything is alright with them. What could I gain from the best insole option for this model?