I have decided to switch from Chase to Amex because benefits better align with travel for my home airport. Main issue is giving up Chase's $0.015 redemption rate from JPM Reserve Card. So here's my question: I currently have a personal Platinum card, personal EDP card, and personal Gold card. Planning to switch to them. In order to get the pay-with-points rebates available only on a business card, and let's assume for a moment that Amex offers me a Centurion card -- will I have a choice of business vs. personal? If not, how do I position myself to get a business Centurion card? Can I convert my personal Platinum card? Or do I take some other step?