Competition pistols for serious competitors

I want to upgrade my competition setup but I am unsure if I should invest in a full custom build or a high-end production pistol. What is the best approach for a serious competitor?

I am looking to upgrade my competition gear. Is it better for a serious shooter to go with a custom-built pistol or a top-tier production model?

I am looking to upgrade my competition gear. Is it better to go with a custom build or a high-end production pistol for serious match shooting?