I do pass up the top-quality emotion Gen4 grip and The marginally milder recoil with the thicker slide and barrel though the lighter fat and feel in the G30S for me greater than can make up for it... I would not comment on the 45 ACP vs the 9mm as https://finnnlltd.isblog.net/the-2-minute-rule-for-how-do-i-buy-a-gock-30-gen-4-online-50026058